Ahhh, after weeks without it (since 23/02) we finally got our hot water back today.
Even though we've got an electric shower and a washing machine its been hard work having to boil pans for everything else, but we're kind of getting used to it, so having it back, and having a hot bath, will be luxury.
If you're looking for a plumber I totally recommend Alan Milton of HG Milton & Son, Craignair 51 Hamilton Avenue, Mauchline, Ayrshire, KA5 6BT. Thanks a lot Alan.