The population in Mayfair had grown with the demand for town houses by the aristocracy and the wealthy, as they moved in from the country.

[citation needed] In 1878 architect Arthur Blomfield made substantial changes to the church interior, introducing a Romanesque open roof structure, wall decoration and architectural detail.

[4] Edward Thomas Daniell, known for his watercolour paintings of the Near East and his etchings of Norfolk, was appointed to the curacy of the church in 1834.

It was visited by President Dwight Eisenhower and the political figure, diplomat and activist Eleanor Roosevelt when she was First Lady of the United States.

[citation needed] That year the Diocese of London allowed the use of the church by The Commonwealth Christian Fellowship led by Rod and Julie Anderson, who met there with a congregation of around 120 and provided an out-reach programme for anti-knife crime training for teenagers, home visits for elderly people and help for the homeless.

[8] Both John Williams, the first Master of Music at the Tower of London, and Margaret Cobb, the first woman to play the organ at the BBC Proms at Royal Albert Hall, were organists at the church.

[8] Hammer Holdings Limited successfully applied for planning permission to convert the building into a 'wellness centre' in 2006, but a campaign led by Lady Sainsbury succeeded in blocking the proposal.