It is an active Anglican parish church in the deanery of Windermere, the archdeaconry of Westmorland and Furness, and the diocese of Carlisle.

[1] The hilltop site for the church was recommended by William Wordsworth who, when describing it in a letter in 1836, said "there is no situation out of the Alps, nor among them, more beautiful than that where this building is placed".

[2] Holy Trinity was built in 1836 with funds from Giles Redmayne, the owner of nearby Brathay Hall.

Redmayne, who had bought the Brathay estate a few years previously, was a successful draper, who had a shop on London's fashionable Bond Street.

[4] The church was consecrated in October 1836 by the bishop of Chester, whose diocese at that time extended as far north as the Lake District.

The plan consists of a six-bay nave, a short chancel with a north vestry, and a tower at the southwest corner.