Well the aircraft in the gun-camera footage clearly wasn?t an Me 410 (from the comfort and safety of my armchair :rolleyes:).

As you say, a tragic incident, but blue-on-blue was probably more common than we think during WW2.

http://www.xs4all.nl/~fbonne/warbirds/ww2htmls/messme410.html

Me410 silhouettes, the Mosquito’s Merlins are much sleeker. Different wing profile as well I think. Mosquito’s fin was bigger