At the car
Found it flat in Ware? Leave it where it is.
Flat tyres in Ware are found rather than felt: a car in the little railway car park that has sagged during the day, a rear tyre gone soft overnight on a Musley driveway, or a visitor to Scott's Grotto returning to a flat on the street. The temptation is to limp to a petrol station for air. Rolling on a flat tyre even for a short distance pinches the sidewall against the rim and can rule out a repair.
Keep the car still and phone with the Ware location, the registration and what you can see. Up goes the jack, off comes the tyre, and its inner wall is checked for crushing. If a nail sits in the tread and the casing is undamaged, the hole is repaired; if the sidewall has been harmed, a new tyre in your size is fitted. Either way, the cost is agreed before work begins.
On run-flat tyres? They behave differently once deflated, so check the handbook's limits and read our page on run-flat tyres; we fit replacement run-flat tyres at the car in Ware as well.
Related help from the same Brent Cross team covers broken tyre replacement in Ware and wheel balancing.