I think it is a DC-4 but hard to be sure.
The 125 accident I was thinking of definitely occured much earlier than G-OBOB's demise, I'll see if I can find out what I am thinking of. Reckon a friend may have his old bizjets on the bookshelves still. I recall G-OBOB at Heathrow as G-BAXL with Dennis Vanguard. G-OBOB, Slender You... not Bob Maxwell then...