Thanks for all that information Tina, it's a great help. My husband made me a size slot ( he was an engineer right down to the last thousand of an inch) and I use that and of course I weigh everything as usual. I think Royal Mail may have to start and fine Post Offices for telling customers something is okay when it's not and I think that idea of chell that said the Post office should stamp the envelope to say it has been checked by them quite a good idea, at least it would save a lot of frustration on the posters side.

Berniece

PS My card has not been delivered yet but who knows.