Children’s fancy dress party c1954, Army Barracks?

The little blond boy, fourth from right, is my cousin Glynn Davies. He would be about 2 years old in this photo, which means it was taken circa 1954/55. Glynn’s father Ray was with the Army. I don’t know where exactly in HK they lived, but by 1956 the family were living in Malta. Can anyone tell me where this photo may have been taken? 

Date picture taken
1950s