I've heard much grumbling about Jessops over the years here at APUG, and how all they sell now are point and shoots, and forget about buying anything else.
I was recently on holidays in London and was running low on Delta 100 in 120 for my Fuji rangefinder. I was walking from the British Museum down New Oxford Street, and saw a Jessops. Just for amusement and faint hope, I went in. The main floor pretty much looked like what others had described all digital point and shoots, and little cases for them. Then I noticed the stairs and the sign over them saying "extended range downstairs".
Down the stairs I went, and here was the good stuff. A display of Manfrotto tripods, high end slr's (not film, but that's not too surprising) a good selection of canon L glass, and right in front of me, a film counter with fridge in behind!
They had the full Ilford range in 35mm and 120, as well as sheet film in the fridge, both Ilford and Fujichrome, with some 4x5 Polaroid thrown in for good measure. The guy behind the counter was knowledgeable too, and I was soon on my way with my film stocks replenished.
I was pleasantly surprised, and pleased to be able to get what I needed.