In 1676 there were 207 conformists and 2 dissenters in Semington, according to a census carried out by Henry Compton, Bishop of London. The house of William Beaven was certified as a meeting house for Independents in 1783 and the dwelling of David Marks as a meeting house for Methodists in 1797. On 27 April 1819 a certificate was issued in respect of 'A newly erected building or chapel' in Semington for Wesleyan Methodist worshippers. In 1829 there were 27 members of the chapel, which enjoyed average congregations of 80 people.
A new chapel was built in 1884 at a cost of £301 and in 1912 a room to accommodate a Sunday School was added, on land given by the Duke of Somerset. The last service was held in the chapel on 13 September 1981; the chapel was then sold and passed into private ownership as a dwelling. On 30 December 1981, however, the Methodist Church Council joined with the Anglican Parochial Church Council to form the Joint Parochial Church Council. Joint use and administration of St. George's Church has continued since that date.