Alan More on Swayne and Wood. Quoting Hajdamach II, starting p.11:
Charlie Swayne was photographed in his workshop on The Delph in Brierley Hill during the 1920s, a tradition carried on by Tom Wood in the 1950s, and to the present day by ....So a 1930s overlap is quite likely.
Plates 21 and 23 are of Swayne and Wood at work in their respective backyard workshops, while plate 22 is of a willow pattern decanter by Swayne. Although the detail is not too clear, the pattern looks similar enough to your piece to suggest that yours was by Charlie Swayne.
I'm looking forward to the verdict from Broadfield House.
Bernard C. 8)