It shouldn't be a problem Scottie, the MOT station should have a Tapley meter which they sit in the passenger footwell and brake from about 20 MPH for cars which can't go on the rollers for whatever reason. (Think locked 4 wheel drive, or six wheel drive?) Getting it on the lift may be a bigger issue... The garage I use for MOT have a level run on lift which is sunk into the ground, but some use a swing arm lift or have to climb on, up small ramps.