Maybe it is possible to get it done for free.
This is US-based, don't think they'll go for UK stuff? Maybe.
http://www.ic3.gov/default.aspx

The best would be to get hold of a UK-based agency.
[edit: here is the link for the UK agency:]
http://www.actionfraud.police.uk/

And well... we might all do down together, but at least no one will be laughing, right James?