Thatcher also specified that she wanted the hymn "I Vow To Thee, My Country" to be sung, Penrose said.

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Details of the ceremony have been published, including the hymns To Be A Pilgrim, I Vow to Thee My Country and Love Divine, All Loves Excelling.

BBC: Lady Thatcher: Well-known hymns and poems for funeral

The final hymn was the patriotic "I Vow To Thee My Country", and then after a blessing the coffin left as slowly as it had arrived, and, as they caught sight of it, once again the crowds outside cheered.

BBC: Margaret Thatcher: the end of an era

Thatcher's request, the music included several British composers including Edward Elgar, hymns such as the patriotic "I Vow to Thee My Country" and a psalm set to the music of Johannes Brahms, which she also chose to be played at the funeral of her husband Denis Thatcher.

WSJ: Global Figures to Pay Respects at Funeral for Margaret Thatcher in London

Thatcher's request, the music includes several British composers including Edward Elgar, hymns such as the patriotic "I Vow to Thee My Country" and a psalm set to the music of Johannes Brahms, which she also chose to be played at the funeral of her husband Denis Thatcher.

WSJ: Global Figures to Pay Respects at Funeral for Margaret Thatcher in London