OK
@Grumpy thanks to
@Andy McDonnell
From where you are and looking at aircraft routing... East --- up the UK West -- Down the UK... I would say that these would be your suspects..
H4695/16: Formation flying will take place
Click here for an interpretation
FORMATION TRANSIT BY RED ARROWS ACFT ROUTING:
LIVERPOOL 532000N 0025102W 1752
NW ASHTON HAYES 531346N 0024619W 1754
NW NANTWICH 530642N 0023523W 1756
LEEK 530645N 0020044W 1759
NE COLLINGHAM 531032N 0004419W 1807
SCAMPTON 531828N 0003303W 1809
FORMATION PLANS TO TRANSIT AT 500-2000FT AGL. TIMINGS, HGT AND ROUTE
ARE APRX AND MAY CHANGE DUE TO WX OR OTHER REQUIREMENTS.
16-08-0207/AS2
Over and Out...