Tyre Vulcanize repair Slough/South Bucks

[ScoobyChris]

Somehow managed to make a screw sized hole (no screw found!) in the tread of one of my tyres on a drive out today which unfortunately falls outside the permitted usual plug-repair zone. Given the tyre still has 6-7mm of tread I’m looking at a vulcanised repair Instead. Does anyone have any recommendations of companies who can carry it out in Slough/South Bucks area? Google hasn’t been too helpful so far.

Thanks, Chris