Early earthenware studio teapot

I bought an interesting group of early earthenware, some of which I know the maker and some not.
First photo shows all the pieces.
The teapot is earthenware, unmarked, but does have a Winchcombe type look to it.
Treacle type glaze with green and brown slipware decoration.
It looks quite early to me. When did bamboo handles start being used, is that a clue?

It would help if we could define the 'early'. What age are the pieces that are marked? The decoration on the plates for instance in not anything much like early St Ives or Cardew/Finch Winchcombe would have done.

The John Shelly vase is dated 1949. The plate I think is his would be 1951-56 if I’ve got that right. I don’t know about the teapot. I like it but I don’t know what it might be.

Oh! Chris Harries Coldstone Pottery in Oxfordshire springs to mind immediately. They did this type of feathered decoration and actually had John Shelly as a thrower. Dieter Kuntzman, Gordon Plahn, and Muriel Tudor Jones (Campden Pottery) worked there, and they all did earthenware in various potteries of their own.Other potters worked there as well. 1953-69 in Ascott-under-Wychwood (what a Gorgeous place name!) Oxfordshire

I’ve got some Coldstone pieces but there’s other names here I don’t know so there’s plenty here for me to investigate.Thank you Philpot.

One looks to be John Shelly ( feathered one) and the other has a JW or WJ mark I think - don’t know who.

A left of field guess.What about Mary Gibson Horrocks? She worked at both the Leach and Wenford Bridge potteries. In 1953 she went to work at Bovey Tracey with Alfred Elhus and worked there until the pottery was sold to David Leach a couple of years later. She then went to teach the monks at Buckfast Abbey, and started her long career there. Would be local to you and it does fit the Leach/Cardew style.

Oh a mark would make it so much easier! I do see a fair bit of Buckfast Abbey pottery but I don’t know if this fits with her work. I will take a look. I guess it’s not distinctive enough to be really obvious who it is.