First, apologies to MightyGem. You're right, Costa aren't on the list. My mistake. Secondly, I signed up for DDS, but IIRC the service number was sufficient. No need for service records. Thirdly, the RAFA also have discount arrangements, and I believe also have a veteran's ID card as well as the RAFA membership one. All, I suspect, better than a "V" on the driving licence.