Thanks CaroleW and Mort29 for the interest.
I checked the 1911 census a long time ago and they sent me on a false trail.Until recently I presumed that the Winifred born 1909 in Walworth was the one but I now know that this is wrong. Perhaps she was born at an earlier date. The Walter James Joughin she married was born in 1898. She had no middle name that I am aware of.
I haven't found any concrete evidence of her on freeBMD, but the Wantage one is worth a further look.