I hired a GSX R 1000 K4 as my bike would not have been ideal for a recent long-ish haul trip.
Excellent service.
http://www.greenlightbikes.co.uk/ £399 inc vat for 7 days in fully comp.
No problem arriving late / early collection as they're happy to offer an out of hours service as I arrived at 9pm to hand the bike back.
Very "nice" bloke and a new business too.
You can hire gear too. Trews were £15 for the week.
Based in Burton upon Trent - ie the Nottingham / Derby area.
Tim