Anytime an IFR aircraft, on an IFR approach, does a go-around, there is a published missed approach that must be followed.
(In some jurisdictions an IFR aircraft can be given a Visual Approach clearance and the published missed approach would no longer be valid in the case of a go-around during a Visual Approach).
The published IFR missed approach procedure is the same whether or not it is a pilot initiated or ATC initiated missed approach (go-around).
In an ATC initiated missed approach, the missed approach procedure will be often be amended. If the aircraft is expected to return for landing, ATC may say something like: “Climb runway heading, maintain 5,000’, contact departure”.
In the case of a pilot initiated missed approach, ATC will also often amended the missed approach procedure. The Sometimes the pilot may ask for an amended missed approach during the approach, or during the missed approach.
Amending the missed approach procedure can be useful for maintaining aircraft separation and expediting the flow of air traffic in the area.
If no amendment is given, the aircraft will follow the published missed approach and hold as published.
In this case particular case, “Quatari 011 go around” was followed by “Quatari 011, standard missed approach”.
An example of a Runway 27L missed approach is: MISSED APCH: Climb STRAIGHT AHEAD, when passing 1080' or D0.0 ILL, whichever is later, climbing turn LEFT on track 150 to 2000'. When passing D6.0 LON climb without delay to 3000', then as directed.
ATC would then give further instructions, or the aircraft would hold at “EPSOM” as published.