Theos aims to impact opinion around issues of faith and belief in society through research, publications, media engagement, podcasts, animated videos, and events such as debates, seminars and lectures.

Under her leadership, Theos sought to promote informed and depolarised conversations about faith in society, with a focus on the belief that humans thrive in relationships of mutual dependence.

[citation needed] The think tank launched two ongoing podcasts, The Sacred and Reading Our Times, which serve as platforms for discussing faith and current issues.

McDonald is the author of the book God Is Not a White Man and regularly appears as a commentator on religion and ethics programmes, including as a presenter of BBC Radio 4's "Thought for the Day".

"[26] and "A Torn Safety Net: How the Cost of Living Crisis Threatens Its Own Last Line of Defence",[27] produced in partnership with the Church Urban Fund, with a joint foreword by former Archbishop of Canterbury Rowan Williams and former UK Prime Minister Gordon Brown.

[45] Overall, Grayling's criticism of Theos was part of his wider argument for the separation of religion and state and the promotion of secular humanism as an alternative worldview.

[46] The podcast has been releasing episodes since late 2017 and has featured a range of guests from various backgrounds, including academics, journalists, actors, musicians, and politicians.

Notable guests have included Justin Welby, Lord Charles Moore, Ash Sarkar, Rabbi Jonathan Sacks, Dame Prue Leith, Sally Phillips, Richard Ayoade, Nick Cave, and Rainn Wilson.

[47] On 11 September 2019, Theos held a live podcast recording of The Sacred at Curzon Bloomsbury in London, featuring an interview with comedian Richard Ayoade and actress Lydia Fox.

Guests who have appeared on the podcast include Thomas Piketty, Marilynne Robinson, Lord Jonathan Sumption, Michael Sandel, Margaret Macmillan, Charles Taylor, Minouche Shafik, Martin Rees, Rowan Williams, Iain McGilchrist, Maryanne Wolf, Alan Rusbridger, and Stefan Dercon.