Funny that I was asking the same question six years later too:
from divernet.com
Spare a thought for the woman who pioneered technical diving in the UK. Polly Tapson's groundbreaking expeditions to the liner Lusitania in 1994 and '95 set both the UK and US diving communities alight. After a serious bend, she had to abandon deep diving, and went into film-making, producing Swept From The Sea with Vincent Perez and Rachel Weisz in 1997. It's a romantic story with a shipwreck - but no, it's not Titanic.She died in hospital in 2000 after a suicide attempt. For someone who contributed so much to the advancement of diving in the UK, she has been all but expunged from history.