The name of Ditchling used to be synonymous with Eric Gill, but since he was outed as an abuser of his own daughters the association has become an embarrassment. Obliged to quietly drop its most famous name, Ditchling Museum of Art + Craft has been exploring less controversial connections. Its latest show, about Bourne and Allen, is a tribute to a forgotten creative partnership that casts a fascinating sidelight on the contribution of women’s traditional crafts – and lesbianism – to British modernism.