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Early and personal life 
Born in 1969, Gilley spent his early years in Southampton, England. He joined the Royal Shakespeare Company at 17. Gilley was in a relationship with actress Emilia Fox with whom he has a daughter, Rose.
Following a decade of professional acting, in 1994 Gilley started his own film making company, P.U.R.E. Productions.
In 1998, Gilley began to make the Peace One Day documentary, eventually deciding to aim for a UN resolution formalising the idea. This goal was reached in 2001 when UN GA resolution (A/Res/55/282), put forward by the UK and Costa Rican Governments, was unanimously adopted to establish the first ever day of global ceasefire and non-violence fixed in the calendar as 21 September annually. This resolution drew on a 1981 UN resolution that had declared the third Tuesday of September the international day of peace.
Gilley organised two concerts at Brixton Academy, London, on 21 September 2002 and 2003. In 2004, the Peace One Day documentary premiered at the Edinburgh Film Festival, then the BBC aired the documentary in September of the same year. On the other side of the Atlantic in 2005, Angelina Jolie and Jonny Lee Miller hosted the North American Film Premiere to highlight Peace Day.
In May 2006, the Peace One Day Citizenship Resource Pack was launched after conversations with over 30,000 young people and teachers. In 2007, a second edition of the Citizenship Resource Pack was made available to every secondary school in the UK.
Gilley produced and filmed The Day After Peace, in association with the BBC. The film documents the first ever life-saving activity on the day - polio vaccinations on 21 September 2007 in insecure regions of south and east Afghanistan. In May 2008 Jeremy Gilley received the award Campaigner of the Year.
In early September 2008 Gilley and Jude Law travelled to Afghanistan to screen The Day After Peace there, Hamid Karzai, and document preparations for the polio vaccination on 21 September 2008 of 1.85 million children under 5 years old, in seven Afghan provinces where conflict has previously prevented access.
On 6 December 2011, Gilley was a founding signatory of the Pledge to Peace at the Peace and Well Being Conference at the European Parliament in Brussels.
- Tim Walker (25 March 2011). "Actress Emilia Fox takes her cub to work". The Telegraph. Retrieved 6 February 2013.
- Richard Kay (11 January 2012). "Emilia Fox brushes up on being alone again". Daily Mail. Retrieved 6 February 2013.
- Derek Brown; Nick Francis, Britain's Best 2008 Awards at The Sun, published 19 May 2008, accessed 15 June 2008.
- Winners gallery, Britain's Best at itv.com, published 2008-15-23, accessed 15 June 2008.
- Roshan Khadivi, Actor Jude Law and director Jeremy Gilley in Afghanistan to promote peace, 3 September 2008
- Jeremy Gilley at the Internet Movie Database
- Jeremy Gilley's Charity Work at lookthestars.com
- Peace One Day Official site
- TED talk from Jeremy Gilley: His Story of Peace One Day