Changes in normal routing?
 

Can anyone help, please? I live in the north west of Sheffield. On a clear day, I see aircraft (747's, Airbus, et al) at cruising altitude, heading North, on an airway, the name/number of which I don't know, which is just slightly to the west of the city.
I presume that most of these are heading to Prestwick-ish before heading across the Atlantic.
However, today, for some reason, quite a number of aircraft at this point were turning left, perhaps by 30 -40 degrees, and continuing on that new heading until out of site.
This is unusual. Is there an explanation for this?
Thanks.
N.Z.

Depends on the NorthAtlanticTrack system.. Look at www.ais.org.uk regestration is free, and you can access all sorts of info. :ok:
watp,iktch

CHIGLET,
Thanks for the info.
N.Z.