"Whittle, Peter Robin". Whittle, Peter Robin, (Born 6 Jan. 1961), author, journalist and broadcaster; Member (UK Ind), London Assembly, Greater London Authority, since 2016 (Leader, UK Independent Group, since 2016); Founder and Director, New Culture Forum, since 2006. Who's Who. 2016. doi:10.1093/ww/9780199540884.013.U287927.
Stearn, Roger T. (2004). "Simpson, Sir John Hope (1868–1961)". Oxford Dictionary of National Biography (online, January 2012 ed.). Oxford University Press. Archived from the original on 14 September 2016. Retrieved 12 June 2017.
rsc.org.uk
"Key Dates". Royal Shakespeare Company. 2010. Archived from the original on 16 June 2010. Retrieved 30 June 2010.
Stearn, Roger T. (2004). "Simpson, Sir John Hope (1868–1961)". Oxford Dictionary of National Biography (online, January 2012 ed.). Oxford University Press. Archived from the original on 14 September 2016. Retrieved 12 June 2017.