If you can find someone who uses Kodak paper you might be better off. Until he screwed up once again, I found a local minilab operator in town gave the best (i.e. pastel, well corrected) prints I had found. The most recent ones were on Kodak Royal paper.
However, don't discount Jessops completely. The branch around the corner from my ex-mate do a much better job than they used to, and they even cut my XP2 negs into 6s last time!
A friend of mine recently praising the reborn Colab, though I haven't used them for a long time now (was happy with them when I did). I've just had a look (
www.onevisionimaging.com) and though I had to download a PDF to find out, their 36 d&p price for 6x4" prints is £10.45, 7.5x5" £14.53. However, I don't like putting important films in the post and RM is less reliable than it used to be.