Image Processing: Darkroom / Lightroom / FilmDiscuss Image processing -- traditional darkoom or digital lightroom here. Notice there are subcategories to narrow down subject matter. .
I use the jessops stuff to test becasue if we need 1hr (ie if we're impatient - negs are okay and we scan evrything anyway) we use them to dev, and we have a drawer *full* of the 'free' rolls.
It varies according to what's cheap. I don't know about Jessops specifically but I do know that in colour neg switching between Agfa and Ferrania is the usual choice, though even Kodak does some private-label stuff, while in mono the choice is usually Central/Eastern Europe: Ilford has got out of that market. Usually it's the same film for anything from a year to a decade, then changes without waerning.