[1] Holy Trinity was built as a chapel of ease to the parish church of St Mary in Netherbury to serve the 500 inhabitants of both Salway Ash and Bowood.

[2] It replaced an earlier chapel of ease which was established through the efforts of the vicar of Netherbury and Beaminster, Rev.

[2] The 1833 church continues to form part of Salway Ash Primary School today.

Substantial contributions were received by Lady Oglander of Parnham Park and Lord Eldon, who both donated £100, while the Bishop of Salisbury, Mr. R. Williams and Rev.

[2] No general contractor was hired; instead the Committee engaged local workmen directly where required.

[10] Holy Trinity is built of Waddon Hill stone with Hamstone dressings and roofs covered with Broseley tiles.

The internal walls are lined with a mixture of white Poole, red Fareham and brown Broadmayne brickwork.

The church is made up of a nave, chancel, south porch and north vestry with organ chamber.

Inside the church, the passages are laid with sanded pennant paving, and the chancel and sacrarium with encaustic tiles.

A number of gifts were received for the church during its construction, including a brass pulpit and desk by Mr. H. Symes.

A brass chandelier was gifted by the Bishop and Canon Codd in addition to their subscriptions towards the building fund.

[7] The stained glass of the central east window features a representation of Jesus on the Cross with Mary Magdalene below.