IF the three RAF types in 1965 (TSR2, 1154Harrier, and 681) had been developed with less political interference, clearer and less fanciful ORs, and better managed and organised industry it would still have left the RAF much smaller than what was cobbled together from 1965 to 1985 (the likely service lives of the three basic versions).
At 31.03.74 IOTL *
48 Vulcan B.2 - 6 squadrons
24 Buccaneer S.2 - 2 squadrons
48 Harrier GR.3 - 4 squadrons
84 Phantom FGR.2 - 7 squadrons
Total 204 strike & reconnaissance aircraft in 19 squadrons.
In 1964 the RAF planned to have a front-line of 106 TSR.2s in 11 squadrons and 96 P.1154s in 8 squadrons by the middle of the 1970s, which makes a total of 202 aircraft in 19 squadrons.
There were also 96 Lightning F.2A & F.6s in 8 squadrons and the RAF's TASMO force of 4 squadrons (2 Buccaneer S.2 maritime strike, one Phantom FG.1 maritime fighter & one Vulcan SR.2 MRR) IOTL both of which would have been the same ITTL.
Therefore, the state of play is only 2 aircraft less than IOTL. Plus the TSR.2s would have been organised into 9 squadrons of 12 aircraft instead of 11 squadrons of 8-to-12 aircraft for a total UE of 108 instead of 106 so the number of aircraft at 31.03.84 ITTL would have been exactly the same as 31.03.84 IOTL.
So the RAF wouldn't have been much smaller than what was cobbled together IOTL.
* I chose 31.03.74 rather than 31.03.75 because that's the end of the financial year before the Mason defence review, it's the month before the first Jaguar squadron became operational and it's about 6 months before the first Lightning squadron converted to the Phantom FGR.2.
TSR2 would have given the RAF similar capabilities to the US F111 and been a step change in capabilities that was not achieved until Tornado arrived in the 80s.
I don't dispute any of that.
1154 would have been closer to Jaguar in the way in which it was used than to the 1127 RAF. Numbers were similar too.
FWIW the peak Jaguar strength was 96 aircraft in 8 squadrons between April 1977 and May 1984. So exactly the same.
681 would have been interesting to compare with Hercules and Transall for performance and costs. Mid way between the Kawasaki C1 and the Il76 or C141 it might not have been as versatile or rugged as the RAF C130s.
It did have the advantage of a higher and (IIRC) wider cargo hold, but we don't know if the fuselage could have been stretched to increase its carrying capacity like the Hercules was.
The big gap would have been something like Phantom and then Tornado which could be genuinely multi-role than single-role. Plans called for something like Phantom (a UK VG design) to replace Lightning but also do some TSR2 and 1154 work.
In 1964 the RAF assumed that the Lightnings would be replaced by a derivative of the P.1154. My guess is that's what would have happened. IOTL 6 of the 8 Lightning squadrons converted to the Phantom FGR.2 between October 1974 & April 1977 and the other 2 squadrons continued operating the type until the end of 1987. For all we know all 8 Lightning squadrons would have converted to the P.1154 ADV in the second half of the 1970s ITTL.
My guess is that some of the money spent on Jaguar & Tornado IDS IOTL would have used to modernise the P.1154s & TSR.2s, buy attrition batches of those aircraft to maintain the strike & reconnaissance squadrons at full strength and possibly buy some TSR.2s to replace the Buccaneers in the TASMO force.
An aircraft like the Tornado ADV may not be needed ITTL as the P.1154 ADVs were about 5 years younger than the Phantoms.
The RAF and RN (unlike enthusiasts here) were willing to look at all the options and came up with the Lightning to Phantom to Jaguar to Tornado path. It is hard to argue with the long service lives of all four aircraft.
For all we know the HS.681, TSR.2 and P.1154 would have had equally long service lives as those aircraft.
IF the three RAF types in 1965 (TSR2, 1154Harrier, and 681) had been developed with less political interference, clearer and less fanciful ORs, and better managed and organised industry it would still have left the RAF much smaller than what was cobbled together from 1965 to 1985 (the likely service lives of the three basic versions).
At 31.03.85 IOTL
48 Harrier GR.3 in 3 squadrons (one with 12 UE and 2 with 18 UE).
60 Jaguar GR.1 in 5 squadrons
96 Tornado GR.1 in 8 squadrons
Total 204 strike & reconnaissance aircraft in 16 squadrons, the same number of aircraft as at 31.03.74.
In 1964 the RAF planned to have a front-line of 106 TSR.2s in 11 squadrons and 96 P.1154s in 8 squadrons by the middle of the 1970s, which makes a total of 202 aircraft in 19 squadrons. This would have been the front line at 31.03.85 too.
The number of aircraft & squadrons in the fighter and TASMO forces would have been exactly the same, but the types of aircraft would have been different. That is . . .
- The 2 maritime strike squadrons might have been operating TSR.2s instead of Buccaneer S.2s.
- Both maritime fighter squadrons would have been operating Phantom FG.1s. IOTL one had FG.1s and the other had FGR.2s.
- The other 8 fighter squadrons would have been operating P.1154 ADVs. IOTL 2 had Lightning F.6s, one had Phantom FG.1s, 4 had Phantom FGR.2s and one had F-4J (UK) Phantoms.
Therefore, at 31.03.85 the RAF has only 2 first-line aircraft less ITTL than it did IOTL. Plus the TSR.2s would have been organised into 9 squadrons of 12 aircraft instead of 11 squadrons of 8-to-12 aircraft for a total UE of 108 instead of 106 so the number of aircraft at 31.03.85 ITTL would have been exactly the same as 31.03.85 IOTL.
So the RAF wouldn't have been much smaller than what was cobbled together IOTL.