Theo James starred in the Autumn-Winter 2025 campaign for Church's, which was directed by David James. The campaign, titled 'A Day in the Life,' featured Theo James portraying a modern English gentleman in various settings, emphasizing the luxury footwear of the brand while drawing inspiration from the refined countryside of Oxfordshire.

Theo James was appointed as a Global Goodwill Ambassador by UNHCR in June 2024. He has supported the agency since 2016, actively engaging with asylum-seekers and refugees in various countries including Greece, France, Jordan, and Syria. In his role, he advocates for refugee rights and shares their stories to raise awareness.