A late dinner was served during our flight from Hong Kong to London, then the lighting was dimmed and sleep encouraged. We both dosed our way through the night but the twelve hour flight seemed to go on and on. Our flight path took us north over China and the over Russia before eventually west to England. A light breakfast was served just prior to arrival at Heathrow at 04.45 am. Again a fast train ride took us to baggage claim and we departed via the "no declara...