I am pretty sure i have it in a box of about 30 different misc switches that have just been chucked into a oddment box(as you do ) but i cant match it without the old one.
In case Lawrence hasn’t sorted this and for future searchers, it is Qualtex that now hold the Norfrost spares and they have some (but limited) stock of the twin tub parts.
Recently wanted an agitator ( Velo make from Holland) from Qualtex (2 years old t/t) and they had none so contacted Norfrost who said part obsolete. Great Product!!! 🙁