Small stoneware bowl with b mark - Branscombe Pottery?

Hi, apologies if I’ve posted this before but I’m reluctant to write this one off as maker unknown just yet! A soup-bowl sized stoneware bowl, nicely made and the mark looks vaguely familiar but with no clear letters I haven’t been able to trace it.

It’s a bit like the b. mark for Branscombe Pottery

Thank you - I’ll give that a go.

I was thinking possibly Purbeck, just along the coast from Branscombe.