CJ no doubt has photos of the infamous 24hr period when all of south UK was fogged out and LTN turned into a massive car park for aircraft. Can't remember the date, '87 or '88 maybe. Loading breeze blocks from the building site opposite the old Britannia building into the forward hold of a Dan Air 1-11 to ensure it was in trim for the ferry flight to LGW. All good until we ran out of breeze blocks !!