Thanks adrian_gray and dhfan, at least I know it’s not me. Aeronut2019, you can also contact me via admin@av8r.co.uk if that helps?

Cheers all

Update: for future reference I’ve sourced two reports from FAST, which don’t appear in public lists of data (as far as I know).

The first covers wind tunnel tests on the Hawker Interceptor prototype; but not the first set of tests in 1934, rather there appears to have been a second set of tests in 1936. This includes wing-only L/D/M as well as full aircraft results. Very useful.

Also found are results from static strength tests on the prototype in 1937. This would have reflected the truss outer wing so as I’m working with a Mk II with a monocoque structure, only the centre wing part of the results would be helpful. 

ARC 2772  “Experiments on a Model of the Hawker Interceptor Monoplane in the Compressed Air Tunnel”, 12 December 1936
RAE MT 11750 “Tests of Hawker experimental wing representing Air Ministry Specifications F36/34, 15/36 and P4/34 prototype”, AM 522507/36/RDA1, April 1937

Thank you Oracal, Fargo Boyle, and Hypersonic, this is all really useful! I will try the Hawker Association, and I wasn’t aware of the National Aerospace Library option.

It seems like the papers I really need are the ARC Aero1674 (I should be able to order this from the National Archive) and any NPL reports on the Hawker Interceptor Monoplane (the NPL’s publications archive only seems to go back to the 1990s – so this is my only lead at the moment (Edit: FAST have old NPL reports so I could pay them to research)).

For reference – Looking through the NAL and National Archive databases and have managed to work out the following (details here in case it helps anyone else):

a. ARC Current Paper Ae1674 (Aero 1674?), Collar, AR, “The performance of the ‘Hurricane’ and ‘Spitfire’ aeroplanes”, June 1940 (National Archives DSIR 23/7847).

b. Paper 2016/03, Ackroyd, JAD, “The Aerodynamics of the Spitfire”, Journal of Aeronautical History, 2017 (NAL CID 144677 public copy here (both say Draft 2, but this appears to be the final version)), covers and supplements ARC Aero1674.

c. ARC R&M 1826 (ARC 3283?), Serby, J.E., Morgan, M.B. and Cooper, E.R., “Flight test on the profile drag of 14% and 25% thick wings”, 1937 (NAL CID 178425).

d. ARC R&M 1937, Staff of Aerodynamics Dept, RAE, “Flight and model tests of the ‘Hawcon’ with wings 30% thick at the root”, 1939 (NAL CID 178581).

e. RAE BA1298, Shaw & Cameron, “Model tests of the Hawker Interceptor radiator cowl”, May 1936 (NAL CID 178285)

f. RAE BA1298(a), Shaw & Cameron, “Addendum to Report BA1298 ‘Model tests of the Hawker Interceptor radiator cowl'”, August 1936 (NAL CID 178286)

Regarding Any NPL reports on the 1/10th Scale Hurricane Model tested at Teddington in 1934:

The NPL tests happened in August 1934, before the F5/34 (November 1934) and updated F36/34 (January 35?, NA listing) and F15/36 (added Merlin II) specifications were released, so any wind tunnel testing probably was carried out with reference to a Hawker “Interceptor Monoplane”, “Hawker High Speed Interceptor Monoplane”, or maybe even (outside chance) a “Fury Monoplane”

The National Aerospace Library does not appear to have any papers involving the Wind Tunnel tests of the Hawker prototype (searching for wind tunnel and search terms above)