From the sounds of things, worst possible case you're looking at is a whole new clutch and a clutch cover...
You could take this opportunity to fit a slipper clutch and nice race cover, all from TecMoto. Their cheapest slipper clutch is 540 quid, and a clutch cover will cost from 90 quid, depending on the style you want.
As weeksy said, TecMoto will collect your bike and will (probably) fit the new clutch and cover for you for free - they're a great bunch of guys like that!
http://www.tecmoto.co.uk/