what decent hip hop nights are there in and around shef?

Genuine thoro-bred hiphop - you'll be lucky!

There are good smatterings around though if you can handle the commercial scene as well - Corporation on a Monday night, RSVP bar some Thursdays I believe?

As DJ stated, youll be lucky. Hip Hop in Sheffield is very rare. Try the clubs DJ listed, also Orchis also plays some Hip Hop, but its not purely Hip Hop, and not only is it commercial but plays other stuff like RnB & Ragga aswell. So really and truly, you are stuffed if you are looking for a pure HipHop night.

Try going to Mancherster or Birmingham.