In late 2011 Terrill embarked on a project that brought together the military and the theatre. The Theatre Royal, Haymarket (where Terrill had filmed Theatreland in 2009) put on a play using injured soldiers and marines as the actors, singers, and dancers. The play, written by the poet Owen Sheers and based on the experiences of the soldiers mostly in Afghanistan, was called "The Two Worlds of Charlie F" and was performed on 22 January 2012. Terrill's feature-length film entitled "Theatre of War", documenting the preparation of the play, was shown on BBC1's Imagine strand and was nominated for a prestigious Grierson Award in the best arts documentary category. In 2014 Terrill's current affairs film for the BBC: "Marine A: Criminal or Casualty of War?" won the Evcom Clarion Award for ethics in journalism. In 2015 Terrill became a Fellow of the Maritime Foundation and was presented with a Lifetime Achievement Award. Throughout 2016 and 2017 Terrill was embedded in the ship's company of to make a major series for the BBC about the largest warship ever built for the Royal Navy, "Britain's Biggest Warship". He returned to HMS "Queen Elizabeth" in 2018 and spent four months at sea to make a second series, "Britain's Biggest Warship: Goes to Sea". This focuses on the marrying of the ship with the F35 Lightning Stealth Fighter off the eastern seaboard of the US. In January 2018 Terrill was conferred Doctor of Science at the Winter Congregation of Durham University "for pioneering work in anthropology and filmmaking"  Terrill lectures widely on film making techniques – especially on working solo in the field. He holds regular workshops at the London Film School. In 1999 Terrill was engaged for a brief period to former glamour model Heather Mills. He proposed to her on a fishing boat whilst sailing up the Mekong River in Cambodia, where they were making a film about landmines. Terrill is now married to the BAFTA award-winning filmmaker Christine Hall. On 9 February 2013 Terrill received a full apology in open court from News Group for repeatedly hacking his phone in 2005/06. They also paid undisclosed but substantial damages plus costs. Terrill is an accomplished amateur athlete, specialising in ultra running, triathlon, rugby and boxing.