Great result in only 31 days. Sent to:

Michael Palin
Prominent Palin Productions Ltd.
34 Tavistock Street
London, WC2E 7PB

And received a nice letter and also personalised photo

Photo: http://img818.imageshack.us/img818/8530/001scc.jpg
Letter: http://img571.imageshack.us/img571/6638/002ytr.jpg

Yes that was the address. Just getting used to posting successes but i'll get there!

Address used as below. Sent 29 Jan 2012 and received 16 Feb 2012, wow!

http://img859.imageshack.us/img859/8106/001aw.jpg

Request sent 29th Jan 2012 received 10th Feb 2012.

Address used

Barry Cryer
C/O David Foster
All-Electric Productions
PO Box 1805, Andover
Hampshire SP10 3ZN

http://img3.imageshack.us/img3/7646/001redf.jpg

Sent original request over a year ago but no luck.

Noticed the agent details had changed and sent again and got personalised photo in 27 days!! See http://img263.imageshack.us/img263/8381/001vsz.jpg