British actor and Great Ormond Street ambassador Martin Freeman narrates the charity's new fundraising campaign, offering the audience a 360 degree view of the hospital at Christmas through a virtual reality film.

The Sherlock star commented 'Christmas is a precious time for families to be together, but some children at GOSH won't be well enough to go home. Staff at this fantastic hospital will make it as special as they can for all their patients, and watching this film really helps you feel like you are there in the moment with these brave children and young people'.