I think you'll be lucky to find a steel for hire up here - you could try Hound Dog Music in Whitley Bay - the owner is very knowledgeable about the local music scene and he did have a psg for sale recently. He might be able to put you onto someone. However, there are only a few players up in the Newcastle area that I know of. Steve Broatch is a good player but rarely visits this forum, he plays with a band called Little White. Tom Fletcher is in Washington, but rarely uses this forum and doesn't seem to use email. I'm in Tynemouth. You'll find pedal steels are quite expensive - John Davis is a good guy to keep in contact with - he often has steels for sale. The Maverick he mentions is probably as cheap as you'll find as far as purchase is concerned. There's so much to f

up on a pedal steel if you don't know what you're doing, and a few intemperate 'tweaks' on someone else's pedal steel could really screw things up for the owner.
If you are a car driver (or want a lift from me) there's a steel players meeting coming up on 11 October in North Yorkshire. I'll be travelling from Tynemouth at about 10.30 and back in Tynemouth about 6ish. PM me for more details if you're interested. I'd offer for you to come round to try my steel out, but I'm moving house soon and am out of the area for a few days as well, so time for me is at a premium.
So, for the gig/recording in question, I'd suggest you stick to slide, or get a steel player in!