Don't know about anyone else, but during the late 60s as a Studio Manager/POA based in Old BH, we were required to work at various studio locations all over London - The Paris, Aeolian Hall, The Camden Theatre, Golders Green, not to mention Maida Vale, etc., but we were never reimbursed for our travel. Was it only them Senior Managers working 9-5 who benefitted? And did anyone ever succeed in parking in BBC car parks? When I was forced to drive in because of hours, I parked in Regents park 1 mile away, or North Paddington and walked.

Mike - that would have been Henry Wood House.
I remember that game well - until someone got wise to it and they took away the metal item that people were using (as you describe).
Then there was the Egton underground car park: Wasn't the "official" way to get in there by using a token (if there were any to be had)?

I seem to remember that Geno (of blessed memory!) found a way to get you SwC guys into the underground car park - where only "Top Management" and Radio Cars were supposed to go!!

Personally, I go back slightly farther, and remember that post 17:30 pm when the offices emptied we were allowed to park (using an official card!) on top of what was "the bunker" (prior to them erecting BHXX on top of it!
In the late 60s, for an evening shift we'd cruise Portland Place for an empty space (this was before the meters were made too expensive to use!) but if none could be had, then we would park up in Regent's Park (if you could find a free space (not that you had to pay, but there weren't physically any empty spaces!) and 'leg it' down to BH. Once it got to about 17:20 pm then you'd request a relief and dash up to collect your vehicle and wait for your opportunity. All this meant that come the end of evening shift you didn't have to trudge up to collect your car and drive home at 22:30!

Security did get tightened up considerably once the Cash Office got raided through the back door (which gave out onto the carpark) and then they eventually decided to close that one altogether and installed a couple of ATMs up in old BH near to the back lifts (at the front of the building!).

The BH Carpark was also available on Saturdays and Sundays (very few office workers around!) but you had to time your arrival right on those mornings so as to catch the outgoing nightshift's spaces! But that was a dicey event as the Maintenance shifts were also using the spaces - and they changed over at 08:00 - which meant there was often a queue on Duchess Street with cars waiting for an available space!! Many a time you had to watch as the oncoming shift's replacement was sitting in his/her car waiting to get into the carpark!!  Good times they were.