How the job is done
Locking wheel nut trouble on the M6.
On the M6 a missing locking key turns an ordinary puncture into a long wait. The spare cannot go on at Hilton Park, a recovery truck can only move the car, and a local garage may not have the right extractor for your alloy. Vans and fleet cars travelling between Coventry and Wolverhampton can easily have lost keys, or nuts rounded by air tools at previous services.
Pass on the make, model and rim size, and explain which problem it is: key lost, or nut rounded off. Extractors made for the purpose take the locking nut off without drilling or scratching the alloy, an ordinary nut is fitted, and then the puncture or damaged tyre is dealt with. The price, including the drive up from NW2, is agreed on the phone. If a nearer specialist makes more sense, you hear that first.
Related help from the same Brent Cross team covers emergency tyre repair on the M6 and new tyres fitted on the M6.