Ever since the Trident vs Comet incident at Bedford (about 1970?) landovers in the UK have not been allowed for 'normal' ATC operations. I know it used to happen at Elstree years ago before taxiway B was built; you'd need to backtrack from the present taxiway A and an aircraft could hold on the turning circle with others 'landing over' but as the turning circle was well below the threshold, it wasn't too dangerous!!