Just to mix things up....
According to the good book (JSP 552) the UK Military use "Go Around" for aircraft in the visual circuit and "Break Off The Approach" for aircraft outside 2nm.
Additionally they use "Break Off The Approach" for all instrument approaches as a positive clearence must be passed to the pilot by 2nm (at the very latest).
If a controller can't get a positive clearence then the phraseology "Break off the approach, no clearence obtained, ack" is used.... then it gets weird!
You can ask the pilot if he is visual with the aerodrome. If he is you can send him to Tower (so he is actually still continuing towards the runway?!?) If not then it's always "Execute Missed Approach Procedure"
Clear as mud
MM