The shape of the parish is rather unusual as it follows the parcels of land to the south-west which were progressively 'inned' (drained) in the 12th century onwards.

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 built in the late Decorated style of English architecture.

There are some remains/ reminders of an earlier, Early English, church which are mainly found at the east end and the first Rector is recorded as taking up his post in 1242.

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.

The nave is particularly impressive as it is empty of seats and the space is put to uses such as exhibitions, concerts, barn dances and the annual Harvest Supper.