My grandfather, John Olson, worked for many years in Des Veoux Road with a company named C.E.Warren and Co. His brother-in-law was Charles Warren who gave his name to the firm. They were sanitary supplier and sometime "architects" and monumnetal masons. They started in No 30 in 1904 and as business grew also bought number 32.
However, when a family split occurred the buildings were sold and The South China Morning Post reported in 1921 that the Des Voeux Road building owned by C.E.Warren and Co had been sold to a Chinese syndicate for HK$130,000 and that at the beginning of the year it had been purchased by the Chinese Chamber of Commerce for HK$80,000.
I don't tink the buildings are shown here but would be interested to know if anybody has an image of them.