I left a long time ago - so forgive any inaccuracy!
We'd just taken delivery of the Tornado. It became quickly apparent that there were no steps to plug into the cockpit coaming to allow ingress/egress at Stations not equipped to handle the a/c. And being a new type it was welcome everywhere!
Allegedly a requirement was sent to BAE - after churning it through the 'pooter a quote for £57 000 per stair set was submitted. It reached us at TTTE.
The unofficial TTTE response was that a fleet of Rolls-Royce be purchased. one parked at every aerodrome and the intrepid Tornado duo deplane via the roof of the R-R, as in those days the top of the range Roller went for less than £50k.