Originally Posted by
wiggy
I’m suprised the BA Source hasn’t come up with the reason yet...maybe that site isn’t all it is cracked up to be........
The event is listed
British Airways B787-9 G-ZBKF BA225 London Heathrow Technical Return. | The BA Source
but with no indication of the cause other than a "technical issue".
Interestingly, it mentions burning off rather than dumping fuel.