If you contact these people, they will advise you of a garage near you that has the tool who will remove the locked nuts for around £30. Or you could buy the tool yourself for around £130.
You might think the garage is on to a winner, getting its money back in 5 or so jobs – but each removal involves the use (consumption) of special tool which is formed into the shape of your locking wheel nuts.
Before taking such a drastic step (expense), check the handbook in the glove-box to see if there is a card for the locking wheel nuts – showing the manufacturer and unique code. The manufacturer will then supply a replacement key, for a fee.
http://www.dynomec.co.uk/