Quite right too.
You've just joined the great many of us unwashed Ex's who's only link with the modern RAF is our ever reducing friends behind the wire. No privileges; can't use the Mess, can't use the Gym. The door has firmly been slammed behind us.
But we are no longer required persons. No matter how attached or important you feel you are, you're not entitled to unrestricted access to any MOD place of work or even personnel accomodation. That was always the rule and now they're being properly enforced. Put up with it, or don't go.