Well Bookworm, there is a blurry line between Sidestep manoeuvres and Circling approaches, but it is important to try and differentiate one from the other so that one may execute the correct GA. For a sidestep,:
Section 1 (3.3)
3.3.2 VISUAL CHANGES OF LANDING RUNWAY
Controllers must be aware that any aircraft that is instructed to visually switch to an alternate runway, in the event of a missed approach, may expect to follow the instrument missed approach procedure for the original runway. Obviously this is not appropriate, therefore, if the aircraft is subsequently instructed to execute a missed approach, the procedure used must be included in the instruction.ad the quoted MATS pt 2 when the reference was found
Note the ATC manual does not refer to this as a 'Circling Approach'. It is a 'Visual Change of Landing Runway' A Circling Approach is when one must manoeuvre around an airfield horizontally, maintaining altitude, into the approach for a differently aligned runway. For this, the only effective GA is to turn for the original runway and execute the original GA, but this is a different animal to the Sidestep manoeuvre as the GA for that should be actioned on the new runway's procedures, as confirmed above.