The Bury Free Press (published 27th march,2007)has an article that mentions that, at RAF Lakenheath (UK), jets were scrambled to intercept a ufo, after it was seen on radar on 12th january. Ufo experts also claim to have a recording that confirms that London Military Air Traffic Control contacted RAF Lakenheath to intercept.(see end of article for audio link). the audio can also be downloaded here It is being analysed by UFO Monitors East Kent, and UFO Data Magazine.
In response (Bury Free Press) says that the MOD mentioned that it was a weather balloon (published 29th march,2007); mmm….. surprise, surprise.
update 8th may:
The service Police report document on this, can be found here (on the MOD site) and mentions “…….it was drifting with the wind. It was between the size of a grapefruit and a soccer ball”.
There therefore seems to be quite a difference between the two sizes here, and it is debated whether you can see properly a gratefruit sized object…..whilst flying? it almost seems like a standard answer, to downsize the problem…..possibly.