The last place/time I knew of such a facility was during my Hawk refresher course at Valley in 1980 - but only to 'static displays'. You just filled out a form and got the boss to approve it. So one Friday I took a Wg Cdr down to Dunsfold, then flew up to Scampton for the weekend. Back to Valley on Monday. Then on another occasion, down to Brize Norton on Friday for a static the next day, back on Sunday with a bit of a headache after being invited to "Take beer!" in the OM the previous night with Puddy Catt who was there with the Meteor 8 from Brawdy. We had both escaped from the dreaded 'Gateway Hotel'!!
The pre-Sandys jet age RAF must have been truly superb!
But 10 years later after I'd just finished my CFS course I wasn't even allowed to take a Bulldog from Scampton to Topcliffe one afternoon to swap it for another which had the ILS mod. 'They' couldn't find any authorisation rule which applied, it seems....