Westgate-on-Sea is a seaside community and also civil parish in northeast Kent, England, with a population of 6,996 at the 2011 Census. It is within the Thanet city government area and also borders the larger seaside resort of Margate. Its two sandy beaches have continued to be a popular vacationer destination given that the town's advancement in the 1860s from a small farming area. The community is notable for as soon as being the area of a Royal Naval Air Service seaplane base at St Mildred's Bay, which defended the Thames Estuary coastal towns during World War I. The community is the subject of Sir John Betjeman's poem, Westgate-on-Sea. Homeowners have included the 19th-century surgeon Sir Erasmus Wilson and also previous Archbishop of Canterbury William Temple. The musician Sir William Quiller Orchardson painted numerous of his best-known pictures while residing in Westgate-on-Sea. The British composer Arnold Cooke went to the town's Streete Preparatory School in the very early 20th century, and also Eton headmaster Anthony Chenevix-Trench invested the earliest few years of his education and learning in the town.