I think £16 is expensive let alone £35
Could possibly go to kwik fit up and supervise them as I don't trust them with anything, they can't really try a flog me new tyres, all are recently on 
you reckon? tyre off...sorry mate cant repair that, its in the wrong place, gotta be a new tyre.
We're fortunate in this area, there is a specialist hidden up a farm cart track who can repair them even on the shoulder. He's done two for me in the past, and both saved me a new tyre. Interestingly, I was put on to him by a friendly independent tyre shed.
He may be able to repair them on the shoulder, but I understand that is illegal, and that is for a reason

I'm not sure that you are correct Lizzie, the repair is quite technical, I believe it involves some sort of vulcanisation, but I may be guessing, certainly the repair internally looks completely different to normal puncture repairs. He assures me that it is perfectly legal, and has been doing it for years, so must be known to local police.
To my knowledge, and with the ones I have had done over the years, it is always an internal repair with a plug being pulled through the hole from the inside.
The regulations for repair are:
"Have a Flat Tyre? Is It Fixable?
The “repairable area” of a tyre is designated as that where a repair can be carried out to British Standards (currently BS AU 159f).
Because a tyre curves away from the middle of where the tyre rolls on the road, only the centre area is repairable. Sidewalls are not repairable.
The repairable area is defined as a percentage of the tyre’s “nominal” section width and thus varies by the size of the tyre. The repairable area is based on the centre line, eg. 82mm means 41mm on either side of the centre line of the tyre."

EDIT: Marks DTM beat me to it!!
