Grrr.
I ordered a new control knob for a Hotpoint WML540..CC54701 many weeks ago from Masterpart, part number C00264039.
It took so long to come that I couldn’t remember exactly what the broken knob looked like.
I went back to fit it this morning only to find that the original knob has all of the programme numbers embossed on it and the new knob is totally blank and therefore useless.
Either it is a one off, faulty knob or could it possibly be a knob for a digital display machine, can’t remember if they are blank or not?