place where American aviators were questioned in London

[Christian Dieppedalle]

Hello,
I seek information on the place where American aviators were questioned in 1944, or earlier, on their return to England after their escape/evasions from France.

American aviators have told me that they had been locked up in a hotel room in London and had been questioned there in February 1944, others spoke about a US Special Center Reception at 63 Brook Street in London in September 1944.

If anybody on this site knows how or where these American aviators were questioned when they returned to the UK, and also their departure back to the USA, then I am certain that it will interest many readers because this subject is still not fully known.

Christian Dieppedalle