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One Day at Christmas is a charity event organised by the UK events industry creating a wonderful Christmas day experience for 3,500 people who are alone or isolated.
Originally started by Mash Media in 2015 at Excel London, the event has gathered huge momentum each year. In 2025, we were delighted to welcome two new venues, P&J Live Aberdeen and Tobacco Dock London. This meant the event was hosted simultaneously across 10 UK venues, with nine taking place on Friday 5 December 2025 and Coventry Building Society Arena hosting on Thursday 4 December 2025.
Last year, over 70 organisations from the UK events industry supported One Day at Christmas with sponsorship, gifts, entertainment and their time, helping to make a magical day for all.













































