Now as a Cathedral, Southwark is once again (as in monastic days) a centre for a pattern of daily worship within the English cathedral music tradition.
https://cathedral.southwark.anglican.org/about/our-history/
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St Bartholomew's was established by Rahere a courtier and favourite of King Henry I. It is thought that it was the death of the king’s wife Matilda, followed two years later by the drowning of their heir Prince William, his brother, half–brother and sister, that prompted Rahere to renounce his profession for a more worthy life and make his pilgrimage to Rome.
https://greatstbarts.com/Pages/Church/history.html
To enter its doors is to step into 2,000 years of history, which had begun with the Romans some six centuries before the name of St Bride, daughter of an Irish prince, even emerged from legend to become associated forever with the site.
http://www.stbrides.com/history/introduction.html#top
St Clement Danes is a memorial church to those who have lost their lives whilst serving in the RAF; and we commemorate over 150 000 people by name in our Books of Remembrance.
https://www.raf.mod.uk/our-organisation/units/st-clement-danes-church/
The Church is in two parts: the Round and the Chancel. The Round Church was consecrated in 1185 by the patriarch of Jerusalem. It was designed to recall the holiest place in the Crusaders’ world: the circular Church of the Holy Sepulchre in Jerusalem.
http://www.templechurch.com/history-2/
The Abbey has been the coronation church since 1066, and is the final resting place of 17 monarchs. The church we see today was begun by Henry III in 1245. It’s one of the most important Gothic buildings in the country, and has the medieval shrine of an Anglo-Saxon saint at its heart.
https://www.westminster-abbey.org/about-the-abbey/
The Cathedral Church of Westminster, which is dedicated to the Most Precious Blood of Our Lord Jesus Christ, was designed in the Early Christian Byzantine style by the Victorian architect John Francis Bentley. The foundation stone was laid in 1895 and the fabric of the building was completed eight years later.
http://www.westminstercathedral.org.uk/art_history.php