Letter from Ralph Vaughan Williams to an unidentified gentleman

Letter No.: 
20? October, 1957

From R. Vaughan Williams,
10, Hanover Terrace,
Regents Park,
London, N.W.1.

Dear Sir
I thank you for your kind congratulations - I have also received greetings from yr. [Andover?]1 Branch which I cannot answer as they give no address.  When next [you]2 are in touch with them will you kindly thank them from me
Yrs sincerely
R Vaughan Williams

1.  Uncertain reading. The congratulations were presumably for VW's 75th birthday.
2.  "You" missing.

Location of original letter:

General notes: 

Transcription from an image of the letter retrieved online October 2019 from liveauctioneers website.  Image shows a received date-stamp of "21 Oct 1957".