While looking through an issue of the bus trade magazine 'RouteOne' with Derrick we stumbled across this story about none other the First Devon and Cornwall's 34912, 530 OHU. Previously the bus was registered N112 UHP and was bought specialy to run the A1 from London to Heathrow Airport, at the time owned by London United. The story features the wheelchair lifts used on the buses and shows N112 UHP's lift in action.
The links below show the bus with First Devon and Cornwall. She was used in Plymouth and Barnstaple but is now a runner on the Penzance routes. The last link shows the bus as it was then in the model form.
If you would like to see the scan off the magazine please e-mail the blog at email@example.com and I will get it to to ASAP