It had been foggy - The report mentions the time at 07.27 but I think that was GMT so it came in an hour later, as we were on BST.
I know they had a long night with a departure delay out of LGW, and that they had reported on-time (crewing had not delayed them at home) 3rd night flight in a row for some of them.
I gather their APP into DLM was not very nice with a lot of TS.
R.