Flippin heck tabby ... you'd be better off buying a complete new one .. Plenty of different makes quite cheap!http://www.ebay.co.uk/itm/Morphy-Richar
ds-Slow-Cooker-Ceramic-Crockpot-3-5litre-/290
585345034?pt=UK_Home_Garden_Kitchen_Steamers_
Cookers_PP&hash=item43a83c7c0a
i would assume most slow cookers have the same size and shape dish. if you maybe bought a cheap one, you could replace it that way? i just bought one from Next for 20 pounds, a cream one and its very nice. i used to own a slow cooker years ago and the one from Next certainly seems to have a standard dish. Hope you get it sorted tabby.