I have found a Mr G.’H’. Hall Brutton listed at 4 Broadwood Road (IL 2060) in 1916-17. This must in fact be Mr G.K. Hall Brutton, a solicitor and member of the Hong Kong Legal Community 1908, pictured in photo no. 10 at http://gwulo.com/atom/17503
The Hall Bruttons must have preceded Vernon and Doris Walker as owners of 4 Broadwood Road.