At the car
Beyond repair on the A406 North Circular and the car is needed now.
Tyres wrecked on the eastern North Circular may have met debris near the A13 junction at Beckton, burst between Edmonton and Crooked Billet, or been driven flat through the Edmonton underpass. For delivery drivers, carers and tradespeople heading out from Meridian Water or Barking, losing the car for a day is not realistic, and a sealant kit cannot help a torn sidewall.
Read out every figure on the sidewall, flagging a run-flat or EV marking, so a matching tyre, where available, is on board when the van pulls out of Brent Cross. The price is fixed on that call. At the car the tyre is replaced and the wheel balanced, then the fitter inspects the remaining three for bulges, tread depth and cuts and tells you honestly if one of them needs attention soon.
Related help from the same Brent Cross team covers burst tyre replacement on the A406 North Circular and flat tyre help.