Due to its size and space, St. George's is known as 'the Cathedral of Romney Marsh' and is mainly a 14th century building with a seven bay arcade. There are some remains/reminders of an earlier, Early English, church which are mainly found at the east end. The building is mainly constructed of Kentish ragstone but some Caen stone from the earlier church can also be found as can many wave-rolled flints which are a reminder of the close proximity of the English Channel.