It sounds like the wheel bearings have come slightly loose. They can be adjusted as detailed here, although the hub may benefit from being overhauled. A link to an article on how to do that is at the bottom of the article on adjusting them.


For your information, those things holding your wheel on are nuts, not bolts.

Edit: It's an old Raleigh, so there's a chance that there's a slightly different process involved in adjusting it. I can't tell from the model, unfortunately.