This passion led to him studying architecture and working in his father's office before being awarded the Sloane Medallion by the Royal Institute of British Architects in 1900 for his design for an art school.
[2] This led to the publication of his three-volume work: A History of English Mediaeval Architecture by the Talbot Press in 1912 which featured 424 of his own ink and pen illustrations and detailed designs.
[3] The outbreak of the First World War saw the birth of his daughter, Joan Margaret Roper-Power, and his commissioning into the Royal Flying Corps and management of the repair workshops at Lympne Aerodrome on the Kent coast.
[2] Power was a principal lecturer, typically on the subjects of: The Form and Structure of Buildings, Historical Ornament and Symbolism and Outline of Architectural Styles and Frank Rutter, the art critic, on Modern Painters from Cézanne to Picasso.
His classes were attended by his colleagues, Power and Andrews, and students that came from as far afield as Australia and New Zealand, attracted by the advertisements in The Studio magazine.
[2] The success of these exhibitions led to Frank Pick, the Deputy Chairman of the Underground Electric Railways Company of London, to commission him and Andrews to design a series of posters.
[3] In September 1939, at the outbreak of World War II, Power was attached to a Heavy Rescue Squad as a surveyor, based at Wandsworth Town Hall.