I was very much lucky unlucky - a few mm difference on any axis from the offending vehicle and I'd have been looking at a shattered window or dented tailgate. As it is, I got away with just some nasty scratches (which won't polish out, but I can live with for the short term).
Richard bodged it all back in - all works, but really I'm going to need a new tailgate at some point if I want to get her looking perfect.
In more positive news, car was serviced (only an interim, but I asked for new plugs as well, due to having had a new coil pack and HT leads since the plugs went in and they had 20k on them), Richard had no concerns to report following his usual diligent inspection (except for 3 missing wheel nut covers) and she drives like new again. :thumbs: