Hm. More damage than I'd imagine. However, the pilot displayed magnificent skill in aborting the approached landing, veering off and putting it down alongside the M11 Motorway.
From 'abort' to touch down could only have been around 5 to maybe 10 seconds, with a hard turn to starboard from a banked, curving approach to port. Had this been a 'service' aircraft, I think the pilot would have received a 'green endorsement' in his log book for his supreme skill in saving the aircraft.