Nightly noisy large jet over London
 

Anorak question from a SW London resident:
Around 23:30 local most nights a large jet transits London west-to-east, right over LHR at probably c.25k. Nothing strange about that, you may say, but the noise is unusual: not the normal large fans but more a multiple Spey, JT3D, Conway-type of noise. Unfortunately on clear nights I've not been in time with the bins to make a clear sighting.

Anyone any ideas? Perhaps a regular RAF VC10 run to the ME out of Brize? KC135/AWACS? Do Nimrods do that sort of regular run perhaps?

You might get some info from the forum at:
http://www.kinetic-avionics.co.uk/forums/ in the "Aviation" section. You have to register but it's free and it's populated by people who oggle their SBS gear all day and night!! Questions such as yours are very common.