Spit and Typhoon
Thanks Nigel
I dashed out to the back garden without my glasses. Thought it was a Typhoon, but in my defence the key identifier for the Spit, given it was already past - the noise of the Merlin - was clearly drowned out by something with a bit more grunt. So either a nice jolly day out for the RAF, or they expect Al Quaeda to attack Stratford with Supermarine's finest. Whaddya reckon ?
Peg