SO THEN - I now have my nice new crisp "certificate of residency".

Couple of things struck me

1) NO EXPIRY DATE
2) It's VERY specific that it does NOT constitute proof of ID - unless accompanied by an ID from country of origin - for Brits that means passport.

I asked if it can be folded - it can.

Oddly was allowed to keep my OLD ID CARD. Was told that whilst it's no longer legal - it was easier to carry. Oh well - I shan't be carrying mine A4 sheet about, then. Just hope the new plastic driving licence is issued in June and I can carry one bit of paper less.