Hello Mark,
Chances are it will be the bearing, you can fit bearing yourself but believe me it is not easy, you will have to take the main drum out and half the machine, unless water is leaking onto the floor or into the washing machine I would suffer it until you are ready to get a new one, service repair charges are as much a a new machine.
Ken
drivewithken@blueyonder.co.uk, July 2007