AIRCRAFT. Discussions on future aircraft production programme: purchase of US aircraft;... | The National Archives
The files are not classified.
If someone want to ask for the docs, I suggest to hire a researcher (I did that several times, PM if you want further info). It is cheapear, easier and faster.
And I am from Argentina, but with a credit card and dropbox (R), distance is not an issue.
Also, a cabinet office file named "The TSR. 2 or the F-111A." is available online at the NA site:
Record Type: Memorandum Former Reference: C (65) 57 Title: The TSR. 2 or... | The National Archives
Another one: "Hardship Claim by the British Aircraft Corporation following the Cancellation of the TSR. 2". at
Record Type: Memorandum Former Reference: C (66) 9 Title: Hardship Claim... | The National Archives
Regards!