Studio pottery vase, brown grit & blue glaze

Studio pottery vase, brown grit & blue glaze
Pot looks hand built with bits of clay pushed into it. Blue glaze inside. Unsigned.
Ring any bells?

Hand built, and it looks a bit scruffy to be truly professional. That jagged edge top in particular. Although that blue glaze looks nice. Hobby potter or pprentice from some time ago? Looks a bit like the naturalistic work popular in the early 70's.

I think it's one of these

https://www.20thcenturyforum.com/t14727-sue-harris-gwc-pen-y-bryn-ceramics-wales

Thanks Naomi. it could well be Sue Harris, the construction looks similar but not the rim. bit frustrating there’s no mark.