Return from UK - Jetlag

I have been in the UK for the last couple of weeks and when I got back, I suffered bad bad jet lag - the plane was totally chock-a-block full and the seats were really jammed up and I didn't get much sleep - total bummer, bummer, bummer, bummer (but then again we all have to suffer sometimes - sort of paraphrasing the REM song).

But the UK was OK - bit overcast and damp and cold - but what would one expect from the UK at this time of the year!