Help ID goblet, MT mark - Margaret Teasdale?

Possibly a Will Illsley studio pottery goblet?  Any ideas?

That bar looks wrong at the bottom.
Could be MT or TM upside down.
Vaguely Aldermaston style.

TM mark rather than Illsley’s IW mark. Similar to Margaret Teasdale’s mark in the book but a square stamp rather than round. Not finding a verified example of her pottery

The white Tin glaze, the blue banding, the shape of the base, the calligraphic style, all shout an Aldermaston trained potter.