Dad should be arriving at Heathrow at 5.25 am tomorrow morning. Was trying to work out if his flight had departed Kuala Lumpur yet but I can't tell from the flight information I can find online and Heathrow isn't showing arrival information for tomorrow yet. However I think it probably has.
No doubt he'll have lots of interesting stories to tell when he gets home. How quickly has that month gone! Will update when he's back.