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At the ceremony Steve Rosenberg, the corporation's Russia Editor, performed a moving piano piece, which has been shared on social media to images and clips of the late broadcaster.
George Alagiah's colleagues have paid tribute to the revered BBC newsreader, who sadly died at the age of 67 in July following his battle with bowel cancer
Proving life away from 24-hour news suits them were former BBC News anchors Dr Sian Williams, now a qualified Chartered NHS psychologist, and Natasha Kaplinsky, who works as a more general presenter.
Friends and family gathered for the memorial service of the late George Alagiah and, at the end of the service, his final words were read out by fellow presenter Sophie Raworth
Presenters including Mishal Husain, Mark Austin, Fiona Bruce and Sophie Raworth were in attendance for the service at St Martin-in-the-Fields church in Trafalgar Square.