Thanks Tim. I've also been sent an English language copy of the 2nd edition S3 owner's handbook, which includes three wiring diagrams: LHD, LHD with hazards, RHD with hazards, but no Sport.
The RHD with hazards in the handbook is different to the one you sent in that it shows a 5-pin Main Beam solenoid/relay (37) whereas the diagram you sent shows 4-pin. It would appear that in-series design changes were made resulting in at least two different configurations. If anybody out there has an S3 owner's handbook other than 2nd edition it would be good to know if the included 'RHD with hazard' wiring diagram shows a 4 or 5 pin Main Beam solenoid/relay.
Interestingly, my own RHD S2 has a 5-pin Main Beam solenoid whereas all of the S2 wiring diagrams that I've ever seen (other than Sport) show 4-pin. In this case the difference may be the result of a design pull ahead from S3.