101 gave me number for Action Fraud.
The guy was very helpful, took all details, was very sympathetic, unfortunately he thinks he recognised the address we have for "Jeremy" he said they had someone call not too long ago saying they had lots of people turning up for cars, they had no cars for sale...
I gave him all details we have for "Mr Smith" yes believe it or not, he is a Mr Smith
including bank details of the account the money went into, he said it sounds like a common fraud unfortunately.
I have a crime reference number and the case has now been passed to Met Police and they will look into it and be in touch if they think they can do anything.
So looks like we have lost the £500
My poor OH feels a twat but he said he just wanted to get a nice car for us, I need to support him now cos he feels he has let us down terribly, I don't blame him at all, I am angry that he didn't listen to me and also that it's taken this long for him to realise that he is a conman but I don't blame him, he was trying to look after his family by getting us a good car
Thanks for everyone's advice