What happens
Punctures on the A5: repaired properly, or replaced with a straight answer.
Two sorts of hazard meet on the A5. In Kilburn, Cricklewood and West Hendon, builders' vans and skips leave nails and screws in the gutter, and cabs pulling into bus stops pick them up. North of M1 junction 9, trunk-road debris collects on the Dunstable, Hockliffe and Fenny Stratford lengths. Potholes rarely cause a repairable puncture, since they pinch sidewalls instead, but a clean nail in the tread is exactly what a proper repair was made for.
Parked up in a Cricklewood side road or a Bletchley retail park, the fitter demounts the tyre to follow the Cricklewood nail or Hockliffe screw inside. Where that hole stays within 6 mm and inside the central three-quarters, a BS AU 159 patch-plug closes it and the wheel goes back on the balancer. Pothole pinches, sidewall cuts or a tyre driven flat from Old Stratford get a replacement instead. Price is confirmed when you call.
Not quite this? Read about 24 hour tyre service or locking wheel nut removal on the A5 instead.