money equivalence / cost of living

[Trillipse]

watching "scandal" - Profumo has just given Keeler �20 - my wife said (albeit lightheartedly) "tighta**ed b**tard" ... i said "hold on a minute, that was probably worth 40 million quid in today's terms..." naturally, i expand...
but are there any websites that allow me to find comparative cost of living to find out just how the generous (or besotted) the film makers were making the minister of war out to be?

[CheekyChops]

You can convert the money here:

http://www.nationalarchives.gov.uk/currency/re sults.asp#mid

It's just over �500 btw