Foot was married to Eva Mackintosh, daughter of Angus Mackintosh. Eva died in 1946. Foot married Catherine Elizabeth Taylor, née Dawe (born Liskeard 1894) in St Germans in 1951, who survived him.
Four of the Foots' sons followed their father into public life.
The Foots also had two daughters, Margaret and Jennifer, and one other son, Christopher, who went into the family law practice. Hugh's son, Paul Foot, was a prominent campaigning journalist and political activist, being a member of the Trotskyist Socialist Workers Party (SWP).
He died on 13 December 1960 in his sleep at his home in Callington, Cornwall, England. He was 80.
Thorne, Roger F. S. "Foot family". A Dictionary of Methodism in Britain and Ireland. Retrieved 14 June 2021. https://www.dmbi.online/index.php?do=app.entry&id=1034
Thorne, Roger F. S. "Foot family". A Dictionary of Methodism in Britain and Ireland. Retrieved 14 June 2021. https://www.dmbi.online/index.php?do=app.entry&id=1034
Foot, John (1998). "Isaac Foot". In Duncan Brack (ed.). Dictionary of Liberal Biography. Malcolm Baines, Katie Hall, Graham Lippiatt, Tony Little, Mark Pack, Geoffrey Sell, Jen Tankard (1st ed.). Artillery Row, London: Politico's Publishing. pp. 109–112. ISBN 1-902301-09-9. 1-902301-09-9
Foot, John (1998). "Isaac Foot". In Duncan Brack (ed.). Dictionary of Liberal Biography. Malcolm Baines, Katie Hall, Graham Lippiatt, Tony Little, Mark Pack, Geoffrey Sell, Jen Tankard (1st ed.). Artillery Row, London: Politico's Publishing. pp. 109–112. ISBN 1-902301-09-9. 1-902301-09-9
Foot, John (1998). "Isaac Foot". In Duncan Brack (ed.). Dictionary of Liberal Biography. Malcolm Baines, Katie Hall, Graham Lippiatt, Tony Little, Mark Pack, Geoffrey Sell, Jen Tankard (1st ed.). Artillery Row, London: Politico's Publishing. pp. 109–112. ISBN 1-902301-09-9. 1-902301-09-9
History of Foot-Anstey Archived 2009-07-27 at the Wayback Machine http://www.footanstey.com/index.cfm/solicitors/About.History
Foot, John (1998). "Isaac Foot". In Duncan Brack (ed.). Dictionary of Liberal Biography. Malcolm Baines, Katie Hall, Graham Lippiatt, Tony Little, Mark Pack, Geoffrey Sell, Jen Tankard (1st ed.). Artillery Row, London: Politico's Publishing. pp. 109–112. ISBN 1-902301-09-9. 1-902301-09-9
Stanley Goodman, ‘Foot, Isaac (1880–1960)’, rev. Mark Pottle, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, May 2007 accessed 13 April 2008 /wiki/Oxford_Dictionary_of_National_Biography
Foot, John (1998). "Isaac Foot". In Duncan Brack (ed.). Dictionary of Liberal Biography. Malcolm Baines, Katie Hall, Graham Lippiatt, Tony Little, Mark Pack, Geoffrey Sell, Jen Tankard (1st ed.). Artillery Row, London: Politico's Publishing. pp. 109–112. ISBN 1-902301-09-9. 1-902301-09-9
Stanley Goodman, ‘Foot, Isaac (1880–1960)’, rev. Mark Pottle, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, May 2007 accessed 13 April 2008 /wiki/Oxford_Dictionary_of_National_Biography
Foot, John (1998). "Isaac Foot". In Duncan Brack (ed.). Dictionary of Liberal Biography. Malcolm Baines, Katie Hall, Graham Lippiatt, Tony Little, Mark Pack, Geoffrey Sell, Jen Tankard (1st ed.). Artillery Row, London: Politico's Publishing. pp. 109–112. ISBN 1-902301-09-9. 1-902301-09-9
Foot, John (1998). "Isaac Foot". In Duncan Brack (ed.). Dictionary of Liberal Biography. Malcolm Baines, Katie Hall, Graham Lippiatt, Tony Little, Mark Pack, Geoffrey Sell, Jen Tankard (1st ed.). Artillery Row, London: Politico's Publishing. pp. 109–112. ISBN 1-902301-09-9. 1-902301-09-9
Stanley Goodman, ‘Foot, Isaac (1880–1960)’, rev. Mark Pottle, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, May 2007 accessed 13 April 2008 /wiki/Oxford_Dictionary_of_National_Biography
Foot, John (1998). "Isaac Foot". In Duncan Brack (ed.). Dictionary of Liberal Biography. Malcolm Baines, Katie Hall, Graham Lippiatt, Tony Little, Mark Pack, Geoffrey Sell, Jen Tankard (1st ed.). Artillery Row, London: Politico's Publishing. pp. 109–112. ISBN 1-902301-09-9. 1-902301-09-9
Foot, John (1998). "Isaac Foot". In Duncan Brack (ed.). Dictionary of Liberal Biography. Malcolm Baines, Katie Hall, Graham Lippiatt, Tony Little, Mark Pack, Geoffrey Sell, Jen Tankard (1st ed.). Artillery Row, London: Politico's Publishing. pp. 109–112. ISBN 1-902301-09-9. 1-902301-09-9
The Liberal Magazine, 1936
Foot, John (1998). "Isaac Foot". In Duncan Brack (ed.). Dictionary of Liberal Biography. Malcolm Baines, Katie Hall, Graham Lippiatt, Tony Little, Mark Pack, Geoffrey Sell, Jen Tankard (1st ed.). Artillery Row, London: Politico's Publishing. pp. 109–112. ISBN 1-902301-09-9. 1-902301-09-9
Thorne, Roger F. S. "Foot family". A Dictionary of Methodism in Britain and Ireland. Retrieved 14 June 2021. https://www.dmbi.online/index.php?do=app.entry&id=1034
Foot, John (1998). "Isaac Foot". In Duncan Brack (ed.). Dictionary of Liberal Biography. Malcolm Baines, Katie Hall, Graham Lippiatt, Tony Little, Mark Pack, Geoffrey Sell, Jen Tankard (1st ed.). Artillery Row, London: Politico's Publishing. pp. 109–112. ISBN 1-902301-09-9. 1-902301-09-9
Thorne, Roger F. S. "Foot family". A Dictionary of Methodism in Britain and Ireland. Retrieved 14 June 2021. https://www.dmbi.online/index.php?do=app.entry&id=1034
Foot, John (1998). "Isaac Foot". In Duncan Brack (ed.). Dictionary of Liberal Biography. Malcolm Baines, Katie Hall, Graham Lippiatt, Tony Little, Mark Pack, Geoffrey Sell, Jen Tankard (1st ed.). Artillery Row, London: Politico's Publishing. pp. 109–112. ISBN 1-902301-09-9. 1-902301-09-9
Stanley Goodman, ‘Foot, Isaac (1880–1960)’, rev. Mark Pottle, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, May 2007 accessed 13 April 2008 /wiki/Oxford_Dictionary_of_National_Biography
Stanley Goodman, ‘Foot, Isaac (1880–1960)’, rev. Mark Pottle, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, May 2007 accessed 13 April 2008 /wiki/Oxford_Dictionary_of_National_Biography
Foot, John (1998). "Isaac Foot". In Duncan Brack (ed.). Dictionary of Liberal Biography. Malcolm Baines, Katie Hall, Graham Lippiatt, Tony Little, Mark Pack, Geoffrey Sell, Jen Tankard (1st ed.). Artillery Row, London: Politico's Publishing. pp. 109–112. ISBN 1-902301-09-9. 1-902301-09-9
Stanley Goodman, ‘Foot, Isaac (1880–1960)’, rev. Mark Pottle, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, May 2007 accessed 13 April 2008 /wiki/Oxford_Dictionary_of_National_Biography
Stanley Goodman, ‘Foot, Isaac (1880–1960)’, rev. Mark Pottle, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, May 2007 accessed 13 April 2008 /wiki/Oxford_Dictionary_of_National_Biography
"ISAAC FOOT, 80, A BRITISH LEADER; Former Liberal Member of Parliament Dead -- Author Had Well-Known Sons". The New York Times. 14 December 1960. Retrieved 16 November 2021. https://www.nytimes.com/1960/12/14/archives/isaac-foot-80-a-british-leader-former-liberal-member-of-parliament.html