Perfect thank you everyone, that explains a lot. We have power to the number plate lights and obviously to the lock switch too due to the noise it makes when you push it, like a faulty solenoid in the lock. The computer is showing that the boot is not shut, so from what you have said the wipe system will be disabled.
The problem with the lock is that it will not shut or every stage one latch. When you press the button to open the boot is makes a strange tack,tack,tack,tack,tack,tack sound. We've got it booked it at a mechanic on Wednesday so hopefully replacing the boot latch will solve the issue. It just means the boot will not lock and it's a bit risky driving, for the moment we have an elastic holing it closed..
Thank you again and I'm glad we've found this forum.