In the days when the CAA was the MoT in The City, I attended at 09.01 one morning, the door was locked but almost immediately it was unlocked and I was admitted - the only 'customer'. The door unlocker disappeared.
After 10 minutes alone, the same door unlocker re-appeared, now on the other side of the counter, and inspected a large appointment book on that counter, and told me that I hadn't applied for an interview by registering my name and thereby placing myself in the queue, applicants being taken in order of arrival. I pointed out that I was still the only one there, I was ready to ask my question.
He then repeated that I had to register for an appointment according to time of arrival, and again disappeared.
After another 10 minutes, still being the only attendee, the same jobsworth appeared, looked at the book, then looked quizically around the room - and called my name out in a loud voice !!
That nearly ended my aviation career, right then, did I want to be associated with this bunch of twerps ? Fortunately I persevered.
Campain Against Aviation. Seems nothing's changed.