I had a minor snag which grounded me three years ago. I was told that an appointment to see an Army specialist in Peterborough would be a 6 week wait, with the inevitable operation even later still.
Fortunatley the Sqn boss knew there was a secret stash of money on station to send aircrew "private" if required - and insisted that there shouldn't be any further delay.
To cut a long and not-really-very-interesting story short, despite SMO's best attempts to conserve his funds, the boss won and I was sent private to have the op 2 days later.
The travel cell did leave me to return from the hospital via train, though. With no fewer than 2 train changes. In the snow....
B*strds.