Chapeau!

I'd be surprised if anyone knew who all those people are; a free beer to anyone who can name them. Contestants may confer but only one beer will be awarded.
The jpegs have names when you roll over them - this may make the task easier.

+1 for Humph. I know the BBC went a bit OTT when he died but it really touched me that people left flowers at Mornington Crescent. In a similar veign I'll throw in:

And