Normally of course I would make sure we had a backup beforehand, but the mysql backup facility on their site was not working, so i had to entrust that they would transfer it all correctly. It seemed to function for a while at first, then it went down.
I have emailed the new hosts twice now, but I have recieved no reply.
But be assured the site will be back up again soon, somehow. Keep checking back over the next few days
Thanks, Tatty.