In 1964, the congregation of St George's Church in Charlotte Square was united with St Andrew's, forming St Andrew's and St George's. The St George's Church building is now used by the National Records of Scotland. Today, the church hosts an annual book sale for Christian Aid. First held in 1974, in 2006 this event raised over £113,000, including the proceeds of the sale of the script of the "Doctor Who" episode "New Earth", signed by David Tennant and Billie Piper.