The Anglican parish church is dedicated to St Oswald and stands on the site of the original church, thought to date back to the 11th Century. Most of the church is Early English and Decorated Gothic style. It was rebuilt in 1820, during the Charles Chaplin era, and further restoration was carried out in 1879-80, by Henry Chaplin. The tower is from 1805-07.According to the list of Rectors displayed in the church, the first known incumbent was Master Roger de Scaccario, taking up his position in 1228. The church seats about 300 people. Parish register entries start in 1558. The original vicarage stood adjacent to the church, but in 1880 a new vicarage was built on Longwood Lane, about a quarter of a mile west of the church. In 1980, the church became a subsidiary of Metheringham, with the vicar of that parish taking on the duties of St Oswald's. The existing vicarage is now privately owned.
The close ties between Hall and church are clearly evident within the church and dominated by the Chaplin family. The family vault lies beneath the chancel and some members of the family are buried there. Adjoining the vestry on the north side is a small chapel, known as the Chaplin aisle. It is here where, following the death of his wife, Lady Florence, in 1881, Henry Chaplin erected a life-sized sculpture of Lady Florence kneeling on a cushion (see picture above). Within the chapel, on the north wall, is a plaque to commemorate the death of Caroline, wife of Charles Chaplin, placed there by her nieces, Louisa, wife of H Sherbrooke Esquire, and Julia, wife of R Alexander Esquire.
A small stained-glass window left of the pulpit has an inscription below commemorating Edward Chaplin, who was Rector of the church from 1801-1854, placed there by his former nurse, Mary Sefton, following his death in 1883. In the same area a further tablet has been placed by the Chaplin family in memory of Mary Sefton herself, died 1890.
On the south wall of the church a plaque has been placed in memory of Francis-2nd Earl of Londesborough, died 1917, and his son, George Francis-3rd Earl of Londesborough, died 1920. The graves of both Henry Chaplin and Hugo William Cecil Denison-4th Earl of Londesborough are to be found in the churchyard.
The organ was gifted by Lady Florence Chaplin and the lectern by the Duchess of Sutherland. On the gate that leads into the church is a dedication which reads "Erected in Memory of Lady Florence Chaplin 1883" a final tribute from her husband Henry Chaplin.
