OK, then, what would BAA call the Aer Lingus 'Voiscount' that flew down the M4 Spur to win a bet from a certain Oirish Heathrow ATCO: ''Foive quid you can't turn foinal inside the 28-Roight Middle Marker". The ATCO lost, and ran down to T1 to pay the crew their foive quid. Dear Old HD might remember that. Just imagine it now...
7.5 nm? Not in my time either HD...! T'was great fun to witness the occasional plan view turn-on inside the OM...! Aer Lingus freighters and Midland Nines etc...