NEW SPECIFICATIONS
F.36/34: Issued to Hawker for the Hawker Hurricane with new RR Merlin V-12 engine developed from the Peregrine, first flight planned for November 1935.
F.37/34: Isuued to Supermarine for the Supermarine Spitfire as stop-gap fighter with the new RR Merlin and armed with eight 7.7mm Browning MGs, first flight planned for October 1935.
F.11/35: A new turret fighter capable of 370mph at 15,000ft and armed with either eight 7.7mm MGs or four 20mm cannon, this has been superseded by F.37/35.
F.18/35: Hurricane and Spitfire replacement, speed of at least 400mph, armament of twelve 7.7mm Browning MGs and a service ceiling not below 35,000ft. Can either be single or twin engined. To enter service in 1938.
Contenders are; Bristol with Bristol Centaurus, Napier Sabre or RR Vulture engines, single-engined fighter with twin tails, Gloster with a pod and boom design with pusher Sabre engine and twelve MGs in nose, Hawker with a new single-engined fighter based on the Hurricane but with powered by RR Vulture and with new wings for twelve MGs and lastly Supermarine have tendered the Type 324 a twin Bristol Taurus powered fighter with twelve MGs in outer wings, an alternative with pusher engines is submitted as the Type 325.
F.37/35: A new bomber-destroyer armed with four Oerlikon 20mm cannon with a top speed of at least 350mph which can be either a modified existing type or a new design with single or twin engines. To enter service in 1938.
Contenders are; Boulton Paul P.88 a single engined fighter powered by either the Bristol Hercules or the RR Vulture, the Bristol 153 a twin-engined fighter powered by two Bristol Hercules radial engines, Gloster G.39 powered by two Taurus radials, Hawker has offered a Hurricane armed with four cannon, Supermarine has offered a larger Spitfire type with new wings and improved radiators and Westland has offered the P.9 a twin RR Kestrel or Peregrine powered fighter.
B.1/35: A new twin-engined heavy bomber capable of 250mph with a bombload of 10,000lbs and armed with powered nose, dorsal and tail turrets. To enter service in 1938.
Contenders are; Armstrong Whitworth AW.39 powered by two RR Merlins with a top speed of 260mph, Boulton Paul submitted the P.79 (an improved B.3/34 entry), Handley Page has offered new bomber powered by two Hercules or Merlins with a top speed of 251mph and Vickers offered an improved Wellington with Hercules engines.
B.8/35: Issued to Fairey and Hawker for a new light bomber to replace the Battle, armament to include eight wing-mounted 7.7mm MGs plus dorsal weapon. To enter service in 1938.
Contenders are; Fairey has offered a Barracuda de-navalised and powered by a RR Merlin engine and the Hawker P.1006 a two-seater bomber with Hurricane outer wings and powered by the Merlin and carrying two 250lbs internally.
B.12/35: A new four-engined heavy bomber to replace the AW. Whitley. This new bomber is to carry a bombload of 14,000lbs over 2000 miles with a cruise speed of at least 250mph. Self-defence armament is to be provided by powered nose, dorsal and tail turrets. To be in service in 1939.
Contenders are; Armstrong Whitworth AW.42 powered by four RR Vultures carrying up to 20,500lbs of bombs and armed with nose, tail and ventral turrets, the Boulton Paul P.90 is all-metal and powered by four RR Peregrine engines and can carry 14,000lbs of bombs at 248mph at 15,000ft and is armed with nose and tail turrets, Bristol has tendered a four Hercules powered bomber carrying 14,000lbs with a cruise speed of 290mph, Short Brothers have tendered the S.29 powered by four Hercules and carrying 14,000lbs of bombs and also armed with nose, tail and dorsal turrets, Supermarine Type 316 powered by either four Kestrel, Peregrine, Merlin, Hercules, Pegasus XVIII or Napier Dagger engines cruising from 265 to 300mph and armed with nose, tail and ventral turrets and Vickers Type 293 is a four-engined Wellington carrying up to 18,000lbs and powered by the Taurus meets all specified performances.
R.1/35: A new small reconnaissance flying boat cruising at least 250mph with an all-up weight of around 25,000lb and armed with nose and tail turrets and capable of carrying 6,000lbs of bombs. To be in service in 1938.
Contenders are; Blackburn B.20 using a new aerodynamic advance to achieve high speed and powered by two RR Vultures, the Shorts S.36 powered by two Perseus radial engines and the Supermarine 314 powered by two Vultures.
S.24/35: A new monoplane carrier-based torpedo bomber/ reconnaissance aircraft with a maximum all-up weight of 10,500lb, a minimum speed of 250mph and carrying one 1,500lb torpedo or three 500lb or six 250lb bombs with a crew of three and armed with five 7.7mm MGs. To be in service in 1938.
Contenders are; Blackburn B.21/B.29 and B.36 all high-monoplane designs powered by the 1200hp RR Exe (itself not yet begun testing) with fixed undercarriage, Bristol has offered a Taurus powered high-wing monoplane, Fairey has offered the Type 100 powered by an Exe or the Merlin and based on the Fairey Battle with a mid-height wing and bomb bay and the Supermarine Type 322 powered by the Exe or Taurus with semi-recessed torpedo and bomb racks under the fuselage and an alternative with a variable-incidence wing for better slow-speed performance has been offered as the Type 323.
M.15/35: A shore based twin-engined torpedo bomber to be based on an existing type to save costs and development time. In service for 1937.
Contenders are; Avro 672 based on the Anson with glazed nose, dorsal turret and two forward-firing MGs, Bristol 150 based on the Blenheim with higher fuselage, new nose and new dorsal turret and the Handley Page has offered a version of the Hampden with Napier Dagger engines and two forward-firing MGs.
N.8/35: Production contract for Gloster Gannet single-seat carrier fighter powered by Hercules radial, first flight June 1935 and to enter service in late 1936.
Q.32/35: A replacement for the de Havilland Queen Bee target drone with a top speed of at least 170mph. Airspeed and de Havilland have both tendered designs.
S.7/36: A new shipboard spotter amphibian aircraft with an all-metal hull and carrying a crew of three-four with a self-defence armament of two twin Vickers 'K' MG mounts, speed is to be at least 150mph with a range of 725 miles.
The sole entry is the Supermarine Sea Otter biplane powered by a Mercury radial and meeting all the main specification requirements. First flight planned for late 1936 with service entry to replace the Seafox in 1937 aboard battleships.
[Note] I've decided to put the RAF two years ahead of real historical timelines in aeronautics until 1940, then it changes to three years and by 1945 four years as a realistic staggered approach. I'm not yet sure when jets will appear but it may be 1939.