If the One-Eleven was leased by the hour, Leeds would give the least flying hours per day of the BMA jet requirements at the time.
Airways Cymru had a hard time financially, they got their One-Elevens but never got anything in the way of a good long-term charter/IT contract for them (the original aim), so doubtless were glad to get some good flying hours out of one of them.
Must have been a couple of years before this, but three of us went from LHR to Leeds on a business day trip. Returning to the airport in the evening the cloud/fog had come down (a regular event there) and the Viscount hadn't made it in. There was a coach being organised which was taking a while and not really what we had paid airfares for, so we surrendered our reservations and got a cab off the Leeds/Bradford terminal front straight to the Heathrow T1 car park. Driver didn't quite seem to understand where Heathrow was exactly, and it was rather foggy on the M1, but it was a significant saving of time for us, and also cost when we cashed our tickets back in to the travel agent.
I never flew in G-WLAD as such, although I remember seeing it as such once on the Palma apron, but before it's stint with Quebecair in Canada it had originally been G-ATPI with British Eagle from new, and was the first jet I ever rode in, Liverpool to London, departing off the old runway at Speke.