RAF Specifications for Aircraft from 1920 to 1949

[hesham]

Hi,

the RAF Specifications from 1920 to 1949 had many missing,in both
Specifications and aircraft or projects.
I will speak about the aircraft and projects (just its names ) which
were not popular and involved in
many Specifications,and I will ask about some
misssing one.
I will start with the year 1920,there is 11 Spec.,and the unknown
project,which was submitted to 7/20 Spec. was Beardmore WB.IX,
and there is anther Spec. for Air Ministry Commercial Air Trials aircraft,
the tenders were;HP W.8,Vickers Vimy Commercial FB.28 and Central
Centaur IIA twin engined and the single engined;Austin Kestrel,
Bristol-29,Bristol-36,Westland Limousine III,Avro-547A, Sopwith
Antelope and Beardmore WB.X.
And the last Spec. were known and I suggest it took the number after
11/20 Spec.,who know more?.

 

[hesham]

Hi,

in 1921,there were 22 competitions, and the Spec. 20/21 was unknown,
did anyone hear about it ?.

also the Boulton Paul P.17 was submitted to 3/21 and the Boulton Paul
P.20 was submitted to 10/20.

 

[hesham]

Hi,

the EE Wren,three were built,one for 1921 Air Ministry trials and two for
1923 Lympne trials,and I suggest it was for the only missing and unknown
one,the Spec. 20/21.

 

[hesham]

Hi,

I also discovered that,the Saunders Kittiwake and Supermarine
Amphibian MK.I were also involved with Beardmore WB.IX in
Spec. 7/20, they didn't mention in the book, British Specifications
File.

 

[hesham]

Hi,

also the Vickers Viking MK.III was for the Spec. 7/20,and it
didn't mention also in the book,British Specifications File

 

[Jos Heyman]

Can you give us more information on that book you refer to. Sounds interesting.
Btw, in my limited experience with the British Specs, there are two types of submissions - those that were officially requested and the private ventures.

 

[Stargazer]

I have been slowly trying to reconstruct the list of all British specifications from 1920 to 1949 as the information found on Wikipedia is extremely incomplete, but it's a painful process, going through every single article and list of every manufacturer. Is there a place I could download a fairly complete list? Thank you very much to you all for your help in this matter!

 

[boxkite]

Can you give us more information on that book you refer to. Sounds interesting.
Btw, in my limited experience with the British Specs, there are two types of submissions - those that were officially requested and the private ventures.

Jos,

Air-Britain does still offer the book on its website https://www.air-britain.co.uk/actbooks/acatalog/Other_Military_Books.html (see fifth entry).

BTW (and OT), there is an interesting overview on the Operational, Naval and Experimental Requirements in Aeromilitaria * The AIR-BRITAIN Military Aviation Historical Quarterly No. 4/1996 and No. 1/1997.

 

[Stargazer]

Here is the first in a series of charts recapitulating all the British aircraft specifications between 1920 and 1949. Thanks to all who have contributed to this, either on the forum or in private messages. Of course I'm open to all suggestions and corrections for this and the following installments...

 

[hesham]

Hi,

from the book, British Specifications File,and other sources,we
can speak about the Spec.,but there is a small rule,I will speak
about year by year,and let the chance to discuss the missing
and confusing Spec. in each year;

1920;
1/20 Bristol-37 Tramp
2/20 Avro-549 I Aldershot I,DH-27 Derby,Bristol-55 bomber
3/20 Handley Page HP.19 Hanley I,Blackburn T.2 Dart
4/20 Poulton Paul P-15
5/20 AW Awana,Vickers-56 Victoria I,Bristol-56,Poulton Paul P-16,
P-18,Vickers Viator,Vickers-81 Victoria II
6/20 Vickers Vimy ambulance
7/20 Supermarine Seagull MKII,Beardmore WB.IX,Supermarine
Amphibian MK.I,Sanders Kittiwake,Vickers Viking MK.III
8/20 Westland Walrus
9/20 Boulton Paul P-12,Parnall Possum
10/20 Avro Aldershot III (I am not sure)
11/20 Boulton Paul P-12,Parnall Possum

 

[Stargazer]

Thanks, Hesham. But if we are to do any serious work, let's start by spelling things properly. On two occasions you wrote "Poulton" instead of "Boulton". So these should read: "Boulton & Paul P.15 Bolton" (note different spelling of type's name) and "Boulton & Paul P.12 Bodmin".

Otherwise the list seems correct, but where did you get all the 7/20 contenders from? All I have is the Supermarine Seagull. Also, you state it's a Seagull II, whereas I have it as Seagull I (from the selfsame source).

 

[Stargazer]

Also, for 10/20 I have the De Havilland D.H.29 Doncaster, NOT the Avro Aldershot III.

 

[Bailey]

but where did you get all the 7/20 contenders from? All I have is the Supermarine Seagull. Also, you state it's a Seagull II, whereas I have it as Seagull I (from the selfsame source).

I think there maybe some confusion with an Air Ministry competion held in 1920 for which the Beardmore WB.IX, Saunders Kittiwake, Vickers Viking III, Supermarine Commercial Amphibian and Fairey III were all entered. The Vickers Viking won. I have not ever seen any relationship between specification 07/20 and this competition.

Regards Bailey.

 

[Bailey]

Also, for 10/20 I have the De Havilland D.H.29 Doncaster, NOT the Avro Aldershot III.

Avro Type 549 Aldershot I, specification 2/20. Avro Type 549 Aldershot III, specification 10/23.

Regards Bailey.

 

[hesham]

My dears,

from the book,British Civil Aircraft from 1919,you will find
all those competitors,and for Seagull I,the book British
Specifications File began with Seagull II,and no existing
to Seagull I.
For the DH.29,it start its life in 1922 with Spec. 5/22.

 

[Stargazer]

Obviously a typo between 10/20 and 10/23 then, which seems logical given that the Aldershot is not at all in the same class with the D.H.29...

Funny, I also had the Beardmore WB.IX and Vickers Viking MK.III in my list for 7/20. Any chance that these two requirements may be one and the same?

As for 10/20, I realize I have the Boulton Paul P.20 listed in my own files...

 

[Bailey]

For the DH.29,it start its life in 1922 with Spec. 5/22.

Hi Hesham, Re British Secification File, Caution the appendix at the back of the book does not list all the aircraft and specifications. You need to read the text for each specification in the main body of the book. 10/20 is clearly for the DH.29 and 7/20 for the Seagull Mk I.

Cheers Bailey.

 

[Bailey]

Funny, I also had the Beardmore WB.IX and Vickers Viking MK.III in my list for 7/20. Any chance that these two requirements may be one and the same?

None of the various references I have indicate this. The competition was for commercial aircraft but, 07/20 was specifically for a deck landing amphibian fleet spotter, two very different requirements. After the competition the Air Ministry bought the winning Vickers Viking III for the Air Counsel and ordered from Supermarine a development of their second place Commercial Amphibian. This resulted in the Supermarine Seal II, which in turn became the Supermarine Seagull I to 07/20 and with further development into the Seagull II against spec 21/21.

Cheers Bailey.

 

[Bailey]

As for 10/20, I realize I have the Boulton Paul P.20 listed in my own files...

From Boulton and Paul Aircraft since 1915. Spec references are 05/21 and 10/21.

Cheers Bailey.

 

[hesham]

Ok my dear Bailey,

I will correct the Spec. 10/20 as;

10/20 DH-29

 

[Stargazer]

Ok my dear Bailey,

I will correct the Spec. 10/20 as;

10/20 DH-29,Poulton & Paul P-20

That's NOT what Bailey said!!! He just said that P.20 was for 10/21, NOT 10/20!

And please... It's BOULTON, not Poulton!!!

Also mind the use of the hyphen sign... "-" was used only by Blackburn on a regular basis, and a few projects by others here and there, but mostly the English government and manufacturers used the full stop sign "."

 

[hesham]

Sorry,

I will correct it.For the year 1921;

1/21 Vickers-79 Virginia MK.III
2/21 Bristol-52,Bristol-53
3/21 Bristol-68,Blackburn R.1 Blackburn,Avro-555 Bison MK.I,
Boulton & Paul P-17
4/21 Vickers Vernon MK.I
5/21 Fairey Fawn
6/21 Westland Dreadnought
7/21 Fairey Flycatcher I,Parnall Polver
8/21 Blackburn T.4 Cubaroo
9/21 Blackburn T.2 Dart
10/21 AW Wolf,Hawker Duiker,Boulton & Paul P-20
11/21 Vickers Vimy Ambulance
12/21 English Electric M.3 Ayr
13/21 Handley Page HP.20 cantilever monoplane
14/21 Supermarine Scylla
15/21 Boulton Paul P-19
16/21 HP.18 W8b Transport
17/21 DH-34,HP Type X monoplane (I think also HP.20)
18/21 DH-32,HP.19 Hanley,Vickers V.61 Vulcan
19/21 Shorts S.3 Springbok I,S.3a Springbok II
20/21 ------?
21/21 Supermarine Seagull MK.II
22/21 Bristol F.2B Fighter

 

[Bailey]

Hi Hesham, from the info I have

1/21 Vickers Type 79 Virginia MK.III
2/21 Bristol Type 52 and Type 53 Bullfinch
3/21 Bristol Type 68 (Project), Blackburn R.1 Blackburn, Avro Type 555 Bison MK.I,
Boulton & Paul P.17/17a (Possibly)
4/21 Vickers Vernon MK.I
5/21 Fairey Fawn, Boulton & Paul P.20 (Possibly)
6/21 Westland Dreadnought (Prelimary design models, see spec 29/22 also)
7/21 Fairey Flycatcher, Parnall Plover
8/21 Blackburn T.4 Cubaroo (Intial design, see spec 16/22 also)
9/21 Blackburn T.2 Dart production
10/21 Armstrong Whitworth Wolf, Hawker Duiker, Boulton & Paul P.20 (Possibly)
11/21 Vickers Vimy Ambulance
12/21 English Electric M.3 Ayr
13/21 Handley Page H.P.20 slotted monoplane
14/21 Supermarine Scylla
15/21 Boulton Paul P.19
16/21 Handley Page H.P.18 W8b Transport
17/21 de Havilland D.H.34, Handley Page H.P Type X monoplane
18/21 de Havilland D.H.32, Handley Page 18/21 Hanley, Vickers Type 61 Vulcan (Possibly)
19/21 Short S.3 Springbok I, Short S.3a Springbok II
20/21 Cancelled
21/21 Supermarine Seagull MK.II (Production)
22/21 Bristol F.2B Fighter (Reconditioning)

Cheers Bailey.

 

[Stargazer]

A few remarks:

1°) 4/21 has plain Vickers Vernon, not "Vernon I" (it probably became so once procured)
2°) Bailey, didn't you say earlier in the thread that the Boulton & Paul P.20 was also proposed for 5/21?
3°) The Handley Page entry for 18/21 (i.e. the Hanley) is described as the H.P.19 by hesham... That's not incompatible, is it?

 

[Stargazer]

I'm attaching the first two yearly charts in PDF format for 1920 and 1921.
Thanks hesham and especially Bailey for everything!

 

[Stargazer]

FOR THE YEAR 1922:

1/22 Passenger Aeroplane Vickers 62 and 103 Vanguard
2/22 Amphibian for Middle East Vickers 59 Viking V
3/22 Reconditioning of Vimy Vickers FB.27 Vimy
4/22 Reconditioning of D.H.10 De Havilland D.H.10
5/22 Spare Wing De Havilland D.H.29 Doncaster
6/22 Single-Seat Ship Fighter Fairey Flycatcher I, Parnall Plover
7/22 Corps Reconnaissance Aircraft Hawker Duiker
8/22 Corps Reconnaissance Aircraft Armstrong Whitworth Wolf
9/22 New Tail Unit and Trial De Havilland D.H.29 Doncaster
10/22 Metal Wings Airco 9A Westland D.H.9A
11/22 Reconditioning of Airco 9A Westland D.H.9A (see 22/23)
12/22 Single-Engined Goods Carrier Vickers 63 Vulcan
13/22 Reconditioning of Snipe Hawker (Sopwith) Snipe (see 12/23)
14/22 High Performance Landplane Armstrong Whitworth Siskin III
15/22 Modifications to Hanley Handley-Page H.P.19 Hanley II
16/22 Torpedo Landplane Avro 556, Avro 557 Ava, Blackburn T.4 Cubaroo I, Vickers Vimy*
17/22 Amphibian Floatplane not proceeded with
18/22 Amphibian Seaplane not proceeded with
19/22 Night Bombing Landplane abandoned
20/22 Coast Patrol Seaplane English Electric Cork III*
21/22 Civil Amphibian Supermarine Swan I
22/22 Two-Seat Fighter Bristol 78 and 84 Bloodhound
23/22 Amphibian Floatplane not proceeded with
24/22 Amphibian Seaplane not proceeded with
25/22 High Performance Landplane Hawker Woodcock I / II
26/22 Cantilever Monoplane De Havilland D.H.29*; not proceeded with
27/22 Mail Carrying Landplane not proceeded with
28/22 Modifications to Doncaster De Havilland D.H.29 Doncaster
29/22 Postal Monoplane Westland Dreadnought
30/22 Day Bombing Landplane Boulton & Paul P.25 Bugle
31/22 Night Bombing Landplane Handley-Page H.P.24 Hyderabad
32/22 Torpedo Landplane (prod.) Blackburn T.2 Dart, H.P.19 Hanley III
33/22 Ambulance Landplane Avro Bison ?*, Bristol 79 Brandon
34/22 Ship's Fighter abandoned, see 37/22
35/22 Reconditioning of Nighthawk cancelled
36/22 Fleet Reconnaissance Aircraft Westland Walrus I conversion
37/22 Fleet Reconnaissance Aircraft Avro 550 Triplane*, Blackburn R.2 Airedale, Bristol 87*, Fairey Ferret, Handley-Page H.P.19 Hanley*, Hawker Hedgehog
38/22 Float Seaplane (production) Fairey IIID
39/22 Two-Seater Bomber Handley-Page (De Havilland) D.H.9A, Westland (De Havilland) D.H.9A
40/22 European Transport De Havilland D.H.54 Highclere, Handley-Page H.P.29 Transport*, Vickers Drawing N°8052*
41/22 Middle East Transport Handley-Page W.9*, Vickers Drawing N°8054*
42/22 Communication Aircraft Handley-Page W.9 ?*; abandoned
43/22 Troop Carrier Vickers Vernon II
44/22 Heavy Goods Seaplane Fairey Fremantle
45/22 Two-Seater Bomber Gloucester (De Havilland) D.H.9A
46/22 Fleet Amphibian Vickers 83 Vanellus (= Viking VII)
47/22 Soaring Glider Handley Oage H.P.22 and H.P.23
48/22 Biplane Experiment Armstrong Whitworth Ape

NOTE: The asterisk (*) indicates types that were not submitted in the end.

Remarks:
- For 22/22 I also have the De Havilland D.H.42 Dormouse listed.
- One source states Boulton & Paul Sidestrand was also designed to 30/22.
- I also have Armstrong Whitworth Argosy and De Havilland Hercules for 41/22.

 

[Bailey]

Bailey, didn't you say earlier in the thread that the Boulton & Paul P.20 was also proposed for 5/21?

Don't worry, a suitably abashed Bailey has amended his list ;D

 

[Bailey]

The Handley Page entry for 18/21 (i.e. the Hanley) is described as the H.P.19 by hesham... That's not incompatible, is it?

The Handley Page Type T, H.P.19 Hanley Mk.I was originally designed as a single seat deck landing torpedo bomber, to spec 3/20. The 18/21 specification was for passenger transport aircraft. BSF states that "Handley Page produced a "Hanley Transport" layout to specification 18/21 for a biplane powered by a Napier Lion engine, but it was not tendered". Had it gone further it might have received an H.P type number, but what, is unknown. C.H.Barnes in Handley Page Aircraft since 1907, makes no mention of this aircraft.

Regards Bailey.

 

[Bailey]

4/21 has plain Vickers Vernon, not "Vernon I" (it probably became so once procured)

In the body of the text concerning 4/21, the term Vernon Mk.I is used, the title shows just Vernon. Both are probably correct. At the time the specification was issued it is doubtful that anything other than one version was envisaged. There is a good chance that the term Mk.I is retrospective from the time when the last ten aircraft of the original batch of thirty were built with Napier Lion engines as Vernon Mk.II to spec 43/22.

Regards Bailey.

 

[Bailey]

- For 22/22 I also have the De Havilland D.H.42 Dormouse listed.
- One source states Boulton & Paul Sidestrand was also designed to 30/22.
- I also have Armstrong Whitworth Argosy and De Havilland Hercules for 41/22.

For 22/22 the de Havilland D.H.42 Dormouse is correct.

I suppose that you could say that 30/22 started the development line that finally produced the Sidestrand & Overstrand, but it would be pushing it to say it was for the Sidestrand itself, which was to specification 9/24.

In Armstrong Whitworth Aircraft since 1913, Oliver Tapper states that the Argosy was originally drawn up to meet a 1922 specification for a Middle East transport. He does not quote the 41/22 specification directly, but the match has to be very close. On the Hercules, this was designed to an Imperial Airways requirement in 1925, but this does not prove that de Havilland had not previously done work against 41/22, which was then used later in the Hercules.

Regards Bailey.

 

[hesham]

Hi,

for the year 1923;

1/23 Fairey IIID
2/23 HP.19 Hanley
3/23 Gloucester Grebe I,Grebe II
4/23 English Electric S.1 Wren,Shorts Gnosspelius Gull
5/23 Saunders Felixstowe F.5
6/23 -----?
7/23 Bristol F.2B Fighter
8/23 Avro-555 Bison MK.I,Blackburn R.1 Blackburn
9/23 Blackburn RB.1 Iris,Fairey flying boat
10/23 Boulton & Paul P-23,P-28,Avro-549 Aldershot III,Fairey day
bomber,Vickers Drawing No.9047
11/23 Blackburn R.1 Blackburn
12/23 Sopwith Snipe
13/23 -----?
14/23 Parnall Panther
15/23 Fairey Fawn Bomber
16/23 Avro-555 Bison MK.I
17/23 Avro-504K
18/23 Beardmore Inflexible
19/23 AW Siskin III
20/23 Fairey Fawn II
21/23 Avro-571 & 572 Buffalo,Blackburn T.5 Ripon I,HP.31 Harrow
MK.I & MK.II
22/23 Westland DH-9A
23/23 English Electric P.5 Kingston
24/23 Gloucester Gorcock,Fairey Firefly I (biplane)
25/23 HP-25 Hendon MK.I/II/III
26/23 Hawker Horsley,Bristol-90 Berkeley,Wesland Yeovil,HP-28
Handcross,Fairey day bomber
27/23 Gloucester Gamecock,Parnall Plover
28/23 Vickers-99 Virginia MK.IV
29/23 Avro-561 Andover
30/23 De Havilland DH-9A
31/23 Blackburn T.2 Dart
32/23 Vickers Vimy IV bomber
33/23 AW Siskin III
34/23 -----?
35/23 Bristol F.2B Fighter
36/23 Hawker Camel 2F1 (Sopwith)
37/23 Gloucester Gamecock
38/23 Vickers Vimy IV bomber
39/23 Gloucester Gloster II
40/23 Supermarine S.4
41/23 Bristol F.2B Fighter
42/23 Fairey Flycatcher I
43/23 Blackburn T.2 Dart
44/23 ANEC I,Vickers-89 Viget,English Electric S.1 Wren,RAF Hurricane,
Parnall Pixie I,Pixie II,Gloucester Gannet,Handley Page,Avro-558,Avro-560,
DH-53 Huminming Bird,Shorts Gnosspelius Gull
45/23 Parnall Pike

 

[Stargazer]

Here is what I have for 1923 (I include the short descriptions):

1/23 Reconditioning Float Seaplane Fairey IIID
2/23 Slots for Hanley Handley-Page H.P.19 Hanley III
3/23 Single-Seat Fighter Gloucester Grebe I / II
4/23 Power Driven Glider English Electric S.1 Wren
5/23 Reconditioning F.5 Saunders (Felixstowe) F.5
6/23 Aerial Survey Aircraft not completed
7/23 Bristol Fighter concerting wings (Hawker), no information
8/23 Alighting Gear Avro 555 Bison I, Blackburn Blackburn I
9/23 Boat Seaplane (replaced) Blackburn Iris*
10/23 Day Bombing Landplane Avro Aldershot III, Boulton & Paul P.28*, Fairey project*, Vickers Drawing N°9047*
11/23 Spotting Landplane Blackburn Blackburn I
12/23 Reconditioning Snipe Hawker (Sopwith) Snipe
13/23 Spotting Amphibian Supermarine Seagull II
14/23 Reconditioning Panther Parnall Panther
15/23 Army Co-operation Conversion Fairey Fawn Bomber*
16/23 Spotting Ship-Plane Avro 555 Bison I
17/23 Reconditioning Avro 504K Avro 504K
18/23 All-Metal Landplane Beardmore Inflexible
19/23 Single-Seat Landplane Armstrong Whitworth Siskin III
20/23 Bombing Landplane Fairey Fawn II
21/23 Torpedo Ship-Plane Avro 571 Buffalo I, Blackburn T.5 Ripon, Handley-Page H.P.31 Harrow I / II
22/23 Reconditioning D.H.9A (De Havilland) D.H.9A
23/23 Reconditioning Flying Boat English Electric P.5 Kingston
24/23 High Speed Fighter Fairey Firefly I*, Gloster Gorcock
25/23 Torpedo Ship-Plane Handley-Page H.P.25 Hendon I-III
26/23 Day Bombing Landplane Boulton & Paul P.25A Bugle II, Bristol 90 Berkeley, Fairey Day Bomber,
Handley-Page H.P.28 Handcross, Hawker Horsley, Westland Yeovil
27/23 Fighter for Ship Use Parnall Plover
28/23 Long Distance Bombing Landplane Vickers 99 Virginia IV
29/23 Ambulance Landplane Avro 561 Andover
30/23 All-Metal Wings (De Havilland) D.H.9A
31/23 Bombing Landplane Blackburn T.2 Dart (conversion)
32/23 Night Bomber Vickers F.27 Vimy (IV)*
33/23 Dual Control Conversion Armstrong Whitworth Siskin III ?*
34/23 Wing for Static Test no information
35/23 Reconditioning F.2B Fighter Bristol Fighter
36/23 Reconditioning 2F.1 Ship Camel Hawker (Sopwith) Ship Camel
37/23 Fighter Landplane Gloster Gamecock (development)
38/23 Night Bomber Vickers F.27 Vimy (IV)
39/23 Racing Seaplane Gloucester Gloster II
40/23 Racing Seaplane Supermarine S.4
41/23 Slotted Wings for F.2B Bristol F.2B Fighter
42/23 Alighting Gear Fairey Flycatcher I
43/23 R&M 322 Airfoil Blackburn Dart
44/23 Light Aeroplane De Havilland D.H.53 Humming Bird
45/23 Fighter Landplane Parnall Pike, Vickers 94 Venture

NOTE: The asterisk (*) indicates types that were not submitted in the end.

Remarks:
- For 19/23 I have the Siskin IIIA, not the Siskin III. Could it be it applied to both?
- For 44/23 I also have the Air Navigation & Engineering Co. ANEC.1 and something called the Handasyde-Raynham, no designation...

 

[Bailey]

Hi Hesham,

6/23 Aircraft for Aerial Survey - Specification not completed.
13/23 Supermarine Seagull Mk.II Production.
34/23 All-Metal Cantilever Monoplane Wing Structure for Static Test.

Regards Bailey.

 

[AM]

hi Stargazer2006

For 33/22 the Avro 555 Bison Mk.II (2nd prototype) is correct.
[from Putnam]

 

[hesham]

Hi,

the 44/23 Spec. was for single seat light aircraft,and when we come
to 1924 tomorrow I have anther contenders to two seat light aircraft
competition,but unfortunately it was not appeared in RAF Spec. list.

 

[hesham]

For 1924;


1/24 Parnall Pike,Bristol-87 three-seat recce,Shorts S.6
Sturgeon
2/24 -----?
3/24 Hawker Woodcock
4/24 Bristol-95 Bagshot,Westland Westburg
5A/24 Vickers-120 Vendace,Blackburn TR.1 Sprat,Parnall Perch
6/26 Fairey Flycatcher I
7/24 Hawker Hornbill,(Fairey Fox),Avro-556 single-seat fighter
8/24 DH-42A & B Ding,Shorts S.3a Springbok II
9/24 Boulton & Paul P-29 Sidestrand,Westland WT-23 & WT-25
day bomber,
10/24 Blakburn R.1A Blackburn II
11/24 Avro-555A Bison MK.II
12/24 Vickers-100 Virginia MK.V,Vickers-108 Virginia MK.VI
13/24 Shorts S.1 Singapore MK.I
R14/24 Blckburn RB.1 Iris
15/24 HP-24 Hyderabad
16/24 Parnall Peto
F17/24 (Bristol-102),Gloucester Guan
R18/24 Supermarine Southampton MK.I
19/24 Fairey F.IIIF,(Shorts S.6 Sturgeon)
20/24 Beardmore Inverness
21/24 Parnall Prawn
22/24 Saunders A.3 Valkyrie
23/24 HP-32 Hamlet,DH-55
24/24 Avro-555 Bison MK.IA
25/24 Hawker Heron
26/24 (Avro-563),Avro-573 ME Transport,De Havilland,Hawker
27/24 Boulton & Paul P-31 Bittern
F28/24 AW.XIV
29/24 Supermarine Seamew
30/24 Vickers-113 & -119 Vespa,AW Atlas,Bristol-93 Boarhound
DH-56,Shorts S.3B Chamois
31/24 Saunders A.4 Medina
32/24 Avro-504N
33/24 -----?
34/24 Gloucester Goodwood,Vickers-134 Vellore
35/24 AW Argosy MK.I

Very important notes;
for the aircraft between brackets; Fairey Fox,Bristol-102 Shorts S.6
and Avro-563,I am not sure about them,their sources are from books
and magazines.
For the 1924 competition for two seat light aircraft,which its tenders
were; Bristol-91 Brownie I & II,Cranwell CLA.2,Beardmore WB.XXIV Wee Bee,
Westland Wood Pigeon,Westland Widgeon,ANEC.II,Shorts Satellite,
Supermarine Sparrow,Avro-562 Avis,Blackburn Blue Bird,Hawker Cygnet I
& Cygnet II,Vickers-98 Vagabond,Parnall Pixie III & IIIa and Bristol F.2B Fighter,and I suggest it was the missing Spec. 2/24.

 

[Stargazer]

1924:

 

[hesham]

OK I correct about the light aircraft competition.

And for 1925;

1/25 Fairey Fawn MK.III & MK.IV
2/25 Gloucester Gloster III
3/25 -----?
4/25 -----?
5/25 Avro-504N
6/25 Fairey F.IIID
7/25 Blackburn T.2 Dart
8/25 Avro-580 four engined bomber
9/25 DH-34B Slotted Wing
10/25 Fairey Flycatcher I
11/25 Supermarine Southampton MK.I
12/25 -----?
13/25 Vikers-117 Victoria MK.III
14/25 Cierva C.6A Autogiro
15/25 Boulton & Paul P-25A Bugle
16/25 Gloster Glodfinch
F17/25 Avro-584 Avocet,Vickers-125 Viro
18/25 Gloster Gamcock
19/25 Fairey F.IIID
20/25 AW AW.17 Aries
21/25 Fairey Fox I
22/25 Hawker Horsley MK.I & MK.II
23/25 Blackburn BT.1 Beagle,Gloster Goring,HP-34 Hare,Hawker
Harrier,Westland Witch,Fairey Day Bomber,Westland WT-26
& WT-27,Vickers Drawing No.11082/1
24/25 Vickers-132 Vildebeest ,Fairey Torpedo Bomber Landplane,
HP-31A Hanwell,HP-34 Hare,Hawker Harrier,Blackburn BT.1
Beagle
25/25 AW Siskin IIIA (first allocated)

 

[Stargazer]

1925:

 

[Stargazer]

A few remarks:

- For 7/24 I also have the Fairey Firefly and Fairey Fox listed.
- I've also got the Blackburn R.B.1B Iris III and the Short Singapore for 13/24.
- 8/25 was in fact the Avro Type 580.
- I've also got the Bristol Type 93 Boarhound for 20/25.