Seems there's some adverse weather (t-storms I assume) expected for Heathrow tonight; BA has just proactively cancelled a slew of the evening s/h rotations, mine included. So far:

BA326/327 (CDG)
BA440/441 (AMS)
BA736/737 (GVA)
BA336/337 (ORY)
BA838/839 (DUB)
BA914/915 (FRA)
BA920/921 (STR)
BA956/957 (MUC)
BA994/995 (TXL)
BA1316/1317 (ABZ)
BA1336/1337 (NCL)
BA1345/1346 (LBA)
BA1402/1403 (MAN)
BA1419/1420 (BHD)
BA1492/1493 (GLA)

Anyone travelling tonight best double-check your flights!