Another of our members used to have a similar problem, and it's not very easy to know why. I can give you a couple of clues, but the problem is almost certainly due to the way you access the internet or to a setting in your browser.
In your case, I see that you have used quite a number of different URLs to access Wildfood, and that may well be the cause of the problem. I didn't make a note of them all, but you used one of them 13 times and another 9 times. If BskyB (your ISP) randomly allocates you one of several different URLs then you may feel you want to contact them to see if you can set a static one.
As for your browser, and allowing it to set (and not clear) cookies, then that's something you might want to check up on. Either way it's 99.95% certain that one of these two phenomena is behind your problem.
All the best
The Earth is degenerating today. Bribery and corruption abound. Children no longer obey their parents, every man wants to write a book, and it is evident that the end of the world is fast approaching.