Maybe I’m misunderstanding the summary and especially points 38 onwards
https://assets.publishing.service.gov.uk/media/58c92626e5274a2a5c00016b/AAR_1-2017_Hawker_Hunter_T7_G-BXFI_03-17.pdf
It was more than a mistake though. It was a series of failings and mistakes.
No pilot should ever have flown in parallel over a major road like that - it wasn’t in the flight plan nor approved.
Seeing as his ‘memory loss’ was also a big problem I’d question how someone suffering from that is...