Heathrow on an easterly wind - holding stacks and departures.

[HEATHROW DIRECTOR]

There's no need to guess... The go-around off 09L is:

Climb straight ahead: on passing 1580(1501)
or I-AA DME zero inbound whichever is the
later, turn left onto track 039° climbing to
3000 then continue as directed.

This is readily obtainable on the internet.