Given it’s a departure for the Far East and off 09R I’d guess that was meant to be a Brookmans Park 6J SID modified in the initial few miles at least by ATC for some reason (quite possibly for the reason given by DaveReidUK).
The BPK 6J has a left turn onto 050 degrees just after takeoff to intercept the 072 radial off the London VOR (then a bit later on there’s another left turn towards BPK itself, which is where QF eventually ends up heading)..however at the start of things it does look like the QF flight started the initial turn onto 050 and then reversed onto something more easterly, which would certainly improve separation from anything flying the missed approach off 09L.