I think the bearings have gone on my zanussi

I have just done this myself and to be honest it was quite easy.
you will need bearings l replaced both front and rear as the cost of each was nothing, a new bearing seal and a drum gasket as the drum has to come apart.
Tools are a digital camera ,socket set, torx key set, set of spanners a cold chisel and a hammer. And you need the old bearings to put the new ones in

you can do this yourself but you need to take full drum out then half in 2