P1103 had terrible visibility over the nose for approach, just one look at a drawing from the side shows it.
P1121 was somewhat better.
IMO Hawkers should've persevered with the prototype, since by 1960, I have strong suspicions the RAF would be looking for a two seater FAW (fighter all weather) and the P1121 would fit that bill quite nicely as a successor to the Javelin.
Its quite likely under such circumstances that fewer Lightnings would've been ordered and instead a Fighter/Attack variant of the P1121 developed.
The 1958 proposal to GOR.339 would mate 'blow' with the more refined wing expected to be flown on the first prototype after its initial flights to validate the machines basic design and performance parameters.
The biggest flaw is the main gear doors cause issues with the inner trailing edge flaps.
his is the version with ground attack strengthening, permitting 200gal drop tanks on the outer wing pylons and 300gal drop tanks on the inner drop tanks.
28 inch diameter dish in reprofiled nose, likely a variant of the AI.23 AIRPASS II.
Flush retracting IFR probe.
Ventral recess for Red Beard or various 'packs' (recce, guns, fuel etc)
Olympus OL.21R for 29,000lb reheated.
Weight at overload is 54,590lb, with 1,000gal external fuel, 1,500gal max internal fuel.
600nm ROA possible but 1,000nm required IFR.
Gyron for 20,000lb dry, 27,000lb reheated (though one with a representative P1121 inlet ran upto 29,000lb), this not really suited for the strike role, it makes a better fighter engine. Despite this Hawkers first submission pre-GOR339 was this, with the early wing for 700nm ROA from a 43,700lb take off weight.
RB122 - Scaled up RB106 "Thames", ideal for high altitude supersonic fighters, not so good for low level strike. This more relates to the P1103.
Conway 31R This formed the basis of the Podded maingear version which dealt with the issues of the flaps and the gear doors, this grew to 70ft in length and also had the ventral recess for weapons circa 1957 this is called the P1123.
Olympus OL.22R- the TSR.2 engine not actualy proposed, but clearly a natural progression from the rest of the options.
The size of the engine bay permitted a wide veriety of engines to be fitted and Camm was always less than willing to commit to just one engine, something I think that went back to WWII with him.
Finaly there was the reuse of the P1121 wing, tail, and parts of the fusilage forward of the ventral inlet on the P1125.
P1125 was a twin Avon RB.133 machine obviously with a new fusilage. Quite attractive.