He was elected to represent Kew ward on Richmond upon Thames Council from 1971 to 1978 and then from 1979 to 1986.[3] As leader of the Liberal group he was Leader of the Opposition on Richmond upon Thames Council in 1978.[5]
Blomfield, who researched, wrote and published books on the history of Kew, chaired the Richmond Local History Society from 2003 to 2013, edited its annual journal Richmond History and succeeded John Cloake in 2015 as the Society's President.[6] He was also a patron of the Kew Society[7] and a past chairman of the Orange Tree Theatre in Richmond.[5]
He lived in Kew, London[3] with his wife Caroline, with whom he had three children (two sons and a daughter). He died on 12 July 2016, a day after celebrating his 82nd birthday.[8]
Blomfield, David (2002). "The Modest Champion Oarsman from Kew". Richmond History, Journal of the Richmond Local History Society. 23: 27–32. ISSN0263-0958.
Blomfield, David (2005). "The Chittys – a Boatman's Family". Richmond History, Journal of the Richmond Local History Society. 26: 51–61. ISSN0263-0958.
Blomfield, David (2008). "Kew Riverside 1820–1920". Richmond History, Journal of the Richmond Local History Society. 29: 27–32. ISSN0263-0958.
Blomfield, David (2014). "Queen Anne's Little Church". Richmond History, Journal of the Richmond Local History Society. 35: 18–24. ISSN0263-0958.
Blomfield, David (2015). "Christopher May (1944–2014): The Unorthodox Historian". Richmond History, Journal of the Richmond Local History Society. 36: 91–92. ISSN0263-0958.