I've just spent a very memorable morning travelling from central London to Silverstone.

It’s the sort of journey that would normally cause serious stress on the south east's traffic clogged road network, but today it was rather wonderful.

In part this was due to  my wheels for the occasion, an Aston Martin DBS, but in la rger measure it was thanks to Sergeant Paul Mostyn of the Metropolitan Police's Tactical  Motorbike Unit and six of his colleagues, who worked together to give the Aston - and the 35 other supercars in our procession - the sort of experience more normally enjoyed by senior government ministers and visiting heads of state.

The ev ent was the Ro yal Automobile Club's annual supercar run to deliver the tourist trophy for this season's British FIA GT championship. A good excuse for a thrash and, thanks to close links between the Royal Automobile Club and the Met, an event considered important enough to earn the full set of police outriders.