Supermarket vegan product lists
Most supermarkets now provide a list of their vegan own brand products, which they will make available either on their website or will send you a copy if you email them.
Sainsbury's and Co-op are pretty good at labelling the actual products as suitable for vegans on the packaging, and M&S are showing signs of beginning to do so.
Please consider emailing the supermarkets you shop at and politely asking them to label their vegan products, if they don't already. Showing consumer demand is one of the most effective ways of encouraging supermarkets to improve their services - in this case not just for vegans but also for friends and relatives who cook for them.
Asda
There is currenly a vegan list on this page on their website: Asda vegan list
Co-op
If you email them, they will email you a list. They have an official policy of not using animal ingredients where they're not necessary, which is good news for vegans. They're also pretty good at labelling their vegan own-brand products as suitable for vegans, including all their own-brand wines.
Marks and Spencer
Vegan product list is available on their website: M&S product ingredients information page
Morrisons
Morrison's do not produce a vegan list and have shown no signs of intending to do so in future. I don't want this page to result in fewer people contacting supermarkets to ask if they produce a vegan list, because the common excuse for not providing one is 'lack of customer demand', so please contact Morrisons to request a copy of their vegan list to show that there is demand for one. They now have a contact form on their website. You could also point out that all the other major supermarkets produce a list, as you can see from this page...
Sainsbury's
Sainsbury's now have a vegan list, it can be downloaded from this page: Sainsbury's vegan list, the vegan list starts on page 94.
Sainsbury's do label some of their vegan products as suitable for vegans, but not all their vegan products are labelled.
Somerfield
If you email them, they will send you a list through the post.
Tesco
Tesco now produce a vegan products list. Contact them at customer.service@tesco.co.uk to ask for your copy.
Waitrose
If you email them, they will send you a list through the post.