My house was built about 15 years ago and has two white meter boxes or
cupboards set in to an outside wall so that the meters can be read
without getting in to the house.

Great idea, but now the door catches have worn and the doors now have a
tendency to swing open at times of their own choosing. They are the
type that you open with a key that fits over the end a triangular nylon
rod. Does anybody know where I can get spares for these things?

Life has taught me to expect that the whole box has to be replaced, even
though it's only the catch that is faulty. Please tell me I am wrong
because it looks to me like the meters would have to be removed before
the boxes could be replaced.

TIA
Steve