A 110 Sqdn Sycamore taking up 'A 5 Star' rank at Changi 1962
There seem to be only a few possible candidates at the time, unless of course it's a visiting foreign dignitary or VIP with a 5 star honorary rank.
Sir Caspar John
Sir Thomas Pike
Lord Mountbatten
My guess would be the latter as I think he was CDS at the time.