These were loaded on Xmas Day as I had been checking fares to Shanghai recently and noticed they had dropped that day by £100. Incidently Hong Kong is £30 cheaper than last year.

However on Xmas Day, the banner above the flight search form still said "weekly offers" and "D" did not appear next to the price. I was about to book 2 tickets but thought I would just hang on in case I might be wrong.

Edit.
Oops I lied. Glad I didn't book two days ago as I think it is now £10 cheaper each way.