It is becoming sadly apparent that those in the flying world and ATC who cannot live with sensible, intelligent and negotiated solutions to problems will need yet another RULE to cover this!
True... Many possible variations of which part may have been completed which not etc.
Here is the answer from Heathrow director
It depends on what sort of airfield you mean. At a small airfield with light traffic it may just mean a turn back into the visual circuit. At a large airport ATC will issue appropriate instructions to sequence the aircraft for a further approach.
So there we go.
Cheerio