caloriecount.about.com and foodfocus.co.uk are very good (you register for foodfocus but I love it & it's free. I log all my food and love seeing the weight/food graphs each day.)
WH Smiths sell Calorie Counting Magazines. Its around £2.50. I bought one 2 months ago. It has most of the foods and supermarket stuff in there. Plus my Cambridge Diet councellor has one too-