In message , Richard Dixon
writes
Dear All

I've been away on a break in Europe, so managed to miss most of the
"plume" incident. Out of interest, did anybody know if there was a danger
to aviation flying through the smoke?


Yes. LHR and Luton got their holding "stacks" moved. People flying under
VFR were diverted.

--
Tim
http://www.stopharlownorth.com/