ah! all great resources, google and a trip to morrisons didnt throw up much - but I will check them on my travels. i knew the Libby's stuff existed but because it's an american thing (much like Oreos and Reese's were) it was about £4 a can last year! nice to see it so cheap now. thanks chaps.
If you have one, your local Asian large retailer, they will sell all kinds of gourds and squash, failing that a trip to your local allotment should yield one...though they'll be sweeter next month