Katherine Jenkins introduces a feast of favourite hymns as the Songs of Praise presenters and the archbishop of Canterbury, Justin Welby, reveal the hymns and worship songs that mean the most to them. The archbishop explains that his favourite has always remained close to his heart because it was the first hymn he sang after experiencing the love of God for himself and becoming a Christian.Katherine explores the beautiful surroundings of the Royal Hospital Chelsea, home of the famous Chelsea Pensioners and designed by Sir Christopher Wren. She is shown around Wren's chapel in the heart of the community and meets a Chelsea Pensioner who is a regular in the congregation.Chart-topping British country duo The Shires chat to Claire McCollum about growing up singing in churches and choirs and perform an exclusive version of their favourite hymn, Jerusalem.