Hi Conwy & Morky,
Rosie is right in saying that you need to have an Investigation background so traning could be effective and helps you to progress further in career.
Or, as normal and like everybody start from the bottom, PM me if you need any advise on this i.e. Where to start etc
A good website (not the only one) for jobs and training
www.investigativerecruitment.co.uk
Hope it helps a bit
DH