British Airways flight #BA65 to Nairobi took off one hour late on schedule at 11:20 (local time) from London Heathrow but pilots noticed the landing gear could not retract.
The Boeing 747-400 circled over the Kent then headed to The Channel to dump fuel and reduce weight for a safe landing.
The aircraft (reg. G-CIVN) landed almost 2 hours later on runway 27L at London Heathrow.
London Heathrow Airport live: cam.airlive.net/lhr