Well i have replied to the email to see if i can get some more info, the next step is to file an abuse report with Energis which i'll do next week!
I'm probably over reacting but the email concerns a very good friend of mine and she is rather upset by it to say the least.
Thanks to everyone who has helped with this. We have a very good idea of who it is now, the Freeserve link up is the main clue.