Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
Do my eyes deceive me, or is that Spitfire blue? I thought the engine note a bit rough so after checking, the BBMF was flying the PR Mk.XIX on 2 June, the Shuttleworth Collection show being another visit on the same day. So that is a Rolls Royce engine, but methinks it's a Griffon, not a Merlin: a much gruffer note. (it's one of my absolute favourites, the Mk.XIX)