Bit early for pumpkin I think? Seen other squashes in Waitrose though.

You can probably find the fresh ones in Asian markets. If you want Libby's in the tin there are American expat sites that sell it though you'd have to check if it's the pure pumpkin or the pie mix. (one confusingly lists it as "100% Pure Pumpkin Pie Mix"... it's one or the other!)

Or you could bribe me to bring some back from the US, I'll be going at least twice before next Canadian Thanksgiving!