Thank you everyone for your advice and best wishes.
Our bank phoned back after investigating it and said all the money will be back in our accounts within 2 days and new cards will be sent to our local branch. Despite their failings previously, they've been bloody brilliant sorting this out. The other bank which the fraudster opened a new account with in our name has been closed and debt will be written off. It won't affect our credit rating and we are not liable for the debt.
Got an email from the council saying they are investigating the security breach which may be the source of the ID theft and referring up to senior mgr.
Reassuringly, we have now been signed up to this service: www.cifas.org.uk/ (for free, usually £20) so if the fraudster tries to open up any new accounts or take out loans using our ID, we will get a phone call to double check we've authorised it. This has eased my mind.
naturegirl I spoke to my solicitor, she was brilliant, said not to worry and she can hold all the money/sort the bills out when all this is sorted :)
Zampa You are right. people are stealing money and getting away with it. Yes, we are going to get our money back, but I doubt the idiot who took it will get caught or have to pay it back. Ultimately the consumer will pay. It's like shop lifting but on a bigger scale. Yes, it probably is funding terrorism!
Naty yep the lack of security checks with our bank is worrying
Butler yes - i was asked the same thing - "are you sure you haven't been on a shopping spree to harvey nics and not told you husband?"!!