Anybody know of any in Sheffield or groups that do em?

Depends if you want it for entertainment or the more research-based side. :)

For evening Ghost Walks, details can be found at:

http://www.steelcityghosttours.co.uk


For research stuff, I'd check out :

http://www.sheffieldparanormal.co.uk/ and there's several threads by other people on here that are interested.

HTH

whats the walk like?

Well, I enjoyed it :) Lots of entertaining and ghoulish stories about Sheffield's past and the ghosts seen in some of the city's buildings.

Should imagine tonight's walk might have been a bit wet though ;)