Reviewers commented on the exhaustive scope of his work and his unsentimental attitude to the expansion of London and the destruction of its buildings through redevelopment and during the Blitz of the Second World War.
[7] In 1909, Harold Clunn was a party to a legal case reported in The Times in respect of £29,218 lent by his father, who had died on 10 March 1909, to a Mrs Rose Phoebe Ackland of Monte Carlo.
All his later works were of a topographical nature, beginning with Famous South Coast Pleasure Resorts Past and Present (1929) and three volumes in the Face of... series: London, Paris, and the Home Counties.
Clunn was praised by The Spectator for his industry in compiling the volume on London which described the changes in the city over the previous century through 25 walks with additional visits to the home counties.
Clunn compared the devastation of the Blitz to the damage caused by the Great Fire of 1666, both providing an opportunity to replace old and squalid buildings with better quality stock[14] such as the "fine new generation" of blocks of flats being built all over London.