Didn't see another thread on this so here we go.

Excellent new resource released by the BBC:

http://www.bbc.co.uk/proms/archive/

This would have saved me a trip to the BBC Written Archives in Caversham when I was researching the Proms 1955-1970!

I can now find out what day it was I heard Paul Hart's Concerto for Guitar and Jazz Orchestra in 1988, or the Bliss Piano Concerto in 1991. Super stuff.

Excellent resource

Though it is not entirely accurate. Some stuff on there is what was programmed but not actually played at the concert. Though if you were there, you will know.