I just took out a home insurance policy with the NFU, combined with their craft worker cover. It covers workshop contents in the workshop, up to £1000 of equipment away from the workshop, £2.5K stock cover and £2.5 million public liability. The only proviso is that earnings from your craft is less than £10K so ideal for hobbyists / part timers. Total cost of all the cover was just over half what my previous insurer (Tesco) quoted to renew my home contents / building cover and I don't have to pay for separate PLI either. I even have employers liability, even though I don't have any employees! ;-)