I'm definitely after a 11-32T. I actually just found out a friend of mine might have one spare I could have, but I'd still be interested in what you might have @hamster . Thanks
As you're in Sheffield, the Decathlon store do them for about £12 new. It's their own label rather than Shimano, but the one I got has been going well for over 2 years
Thanks @pigman – I think I did look at Decathlon a while back, but they've since reduced the price on that cassette, so it definitely could be an option.