The Bandmaster of 1st Green Jackets 43rd & 52nd Band in 1963 was Basil SIMPSON.
Here's Simpson conducting in Penang in 1963, alongside a crop of our man from the previous photo, together with another image of BM Simpson at Oxford City FC in 1960 (included as the [edit] Bandmaster badge is very clear and because he appears to be in the frock coat, which is a subject Toby and I have discussed in the past!) ...
All three images © RGJ BAND 2017
Looks like the same man to me.
Frustratingly while the back pouch is visible, there's no way its badge can be made out.
Also the RH photo reveals the badge is NOT the WO1 Royal Arms.
Mark