Emilie was the sister of my husband's grandfather (Ernest) and I had the following from another researcher:

EMILIE LOUISE THOMAS (sister of Ernest) married Sydney H CRADDOCK. Before 1939 they ran night club in London, "Welcome Club" Also involved in supplying wines to London hotels. Had daughter Joan.

I have not been able to find any records of the Welcome Club to verify this nor can I find a birth record for Joan only for Beatrix and William.
I hope this of interest.