Shiona, thank you very much for your help, I have just had a look at some of your fathers work (my ignorance is way broader than my knowledge). I do like the heavily pulled decoration that he used on this and other work.
Are you sure this piece would have been a bowl originally? The neck is quite small (1.5 inches, more like a vase).
Anyway, whatever it was or is, it is lovely.
Many thanks, John.