I think it's a really good idea to have Product Liability Insurance, and probably not as expensive as you might think. I used TH March, because they had a specific Craft Policy which understood the specific risks of our type of business, such as leaving stock in a car and so on. My bank were always trying to sell me business insurance, but couldn't really understand the nature of what I did, and couldn't compete on price either!
Try the Artist network http://www.a-n.co.uk/ Artist +AIR membership For practising artists, includes AIR membership, £5m Public and Product Liability insurance, full online access. Annual subscription £36 This represents the best value that I have come across
I did. There's a few main suppliers. I've used Manor Insurance and Ian Wallace. The market traders federation (or something similar) is another one. The prices are roughly similar but the cheapest tends to depend on how many craft fairs you want to do, etc.
If you're planning on doing craft fairs it's worth knowing that many will insist you have your own public liability insurance and have a minimum cover amount (IME it was often 2 million or 5 million depending on size of fair)
I'm about to start selling homemade, handmade home accessories (cushions, garlands, lampshades, bunting etc) and wondered whether I need any special kind of insurance - public liability, product liability etc. I know that, legally, I don't have to have it, but if you run this kind of business do you have these insurances? I'm going to be selling online - etsy, folksy, Facebook - and may try to do some local craft fairs (although presume the organisers of these will have public liability cover in place).