Tennis in HK seems to have been popular. This picture was taken at either The Towers on Broadwood Road, which I think had two courts, or perhaps more likely 13 Broadwood Road which was the home of my great uncle Charles pictured here second from left, and his wife Ethel also pictured here. The boy in the middle is Reginald Warren and I think the year would have been about 1920. I cannot identify the two men.