Muswell also mentions this about Vivienne Warren:
“The second wedding article mentions Vivienne's sister Vicki Martin. Vicki was also a model and actress and under the name Valerie Mewes was a protégé of Stephen Ward and close friend of Ruth Ellis. She and Ellis both worked at Murrays Club in Soho where Ward later recruited Christine Keeler.
Vicki died in a car crash in 1955(about a month before Ruth Ellis, who also knew Ward, apparently shot her lover) the circumstances of the crash have never been fully explained.
Small world eh!”