The job, step by step
Beyond repair in Cheshunt and the car is needed now.
Some damage leaves nothing to repair: a tyre run flat along the A1010 until the wall collapsed, a gash from metal near the Turnford units, or a burst coming off M25 J25. For a Cheshunt driver with a hospital visit, a flight or a day's work ahead, a space-saver is no match for a run down the A10, so the car needs a full-size tyre on it before the day can go ahead.
Read everything on the Cheshunt tyre's sidewall, load index and speed rating included, and give the car's make. A matching tyre travels out with the fitter, who takes off the ruined one, mounts and balances its replacement and tightens the nuts to torque. The other three then get checked for cuts and tread wear. You know the full cost from the phone call, ahead of the drive up the A10.
Related help from the same Brent Cross team covers burst tyre replacement in Cheshunt and wheel balancing.