Older Test Station

So our Test station has been around a very long time and at one time would fall under grandfather rights. We have a typical test bay just like many garages where the ramp is tucked away in the corner of the building. Our very old ramp is now ready for renewal and our boss has had many garage equipment suppliers in and they all seem to say the same thing, and that is that the floor area and shape of the test bay is not adequate to accommodate a modern ramp. I'm to understand that the equipment suppliers today advise that the test bay is 5 cm too narrow to accommodate an up to date OPTL. The AE has looked at other options and been told the same with regards to fitting a replacement ramp. It is not possible to move the ramp over by 5 cm because the roller brake tester cannot be moved over because the wall then becomes an obstruction. Our AE has looked at other options like using and modifying other workshop bays to fit an mot bay but the building won't accommodate the changes. My AE is going to contact DVSA and see what they say. I was wondering if they would be flexible about the 5 cm linear measurement between the outer wall of the test bay and the ramp posts.