it's definitely the bearings gone. it will be expensive to fix (well in excess off £100) but if you are intending to fix it stop using it, every time you use it you increase the chances that it will damage the bearing outer cases beyond repair so the whole outer drum would require replacing too (then it will simply be uneconomical to repair)
easy check to see if it's the bearings, open the door, grab hold of the metal inner drum and try moving it from side to side, you will be able to feel the inner drum is loose and it will move about independent of the outer drum.