In 1919, with John Murray Easton (1889-1975), he formed the partnership of Easton & Robertson at 168 Regent Street, London, which continued until 1931 [REF].
Robertson was elected a Fellow of the Royal Institute of British Architects in 1925[REF] and an Associate of the Royal Academy on 22 April 1949 and a Royal Academician on 24 April 1958 [REF].