Hello I am looking for your help please.

My 11 year old some is doing a project on The Spitfire. He is sure he seen a story about how a Spitfire Pilot seen a German aircraft heading towards London at the very end of the war and did a totally selfless act of flying into it to stop it.
He thinks this would be great to put into his project but have searched and searched and I cant find it anywhere. Would anyone be able to help me out by pointing me in the direction of the story?
Thanks in advance