Binding Brakes Help Please!

Remove the caliper and give it a clean with brake cleaner. Clean the slider pins the the pads are on as well.

Are you sure its the brake John?

Also check your chain/rear tyre pressure/rear wheel bearings. If it really is the brake then your disc would be very hot after a few mins riding.

Thanks Duncan. I might venture a look at it, but not til the weekend. Got a bit of a full schedule till then.