Oh dear. And more from the BBC...
https://www.bbc.co.uk/news/uk-england-london-63069004
And The Guardian thinks it happened on the runway. Hmm.
Two aircraft involved in ‘minor collision’ on runway at Heathrow
https://www.theguardian.com/uk-news/2022/sep/28/two-aircraft-involved-in-minor-collision-on-runway-at-heathrow
Looking at ADSB EXCHANGE the Korean is still parked up with his transponder on. Not on the runway.