Studio vase TW mark and cross mark - help appreciated!

Hello all,

This is another vase I've had knocking about for ages, waiting for a flash of inspiration to come to me regarding it's origins.  But 10 years on, I feel its time to seek outside help!

It's a small ,heavy but nicely shaped, grey/brown glazed vase with incised decoration.  There are two distinct marks on the base.  The one on the left looks like a cross, possibly incorporating the letter L, and the other looks like an intertwined T and W.   I've been through the whole studio pottery handbook, and various websites but nothing is jumping out at me as a match.   It could just be me being a wally, or this could be some unknown maker, I just thought the marks looked familar (maybe I've been looking at the too much!)

Anyway, any ideas much appreciated - thanks in advance!

Ceri

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