The building was erected by Wesleyan Methodists led by Richard Mercer. The chapel in Park Row opened in April 1855 and was known as ‘The Wesleyan Congregational Free Church’ and also Mercer's Chapel. It was purchased by the Church of England in 1873 and alterations were made by Thomas Chambers Hine. It was known as the Episcopal church of St. Thomas and was consecrated by the Rt. Revd. Christopher Wordsworth the Bishop of Lincoln on 22 April 1873. The church was merged with St. Matthew's Church, Talbot Street, in 1926 and the building was demolished in 1930. This record of Great War fatalities from the parish of St Thomas was compiled by Rachel Farrand from a list within the Baptismal Register which was kept by Rev Charles Davis, vicar of St Thomas, 'List of persons connected with this parish of St Thomas who died in the present war.' The list includes servicemen who died in the General Hospital which was in the parish. The Baptismal Register is held by Nottinghamshire County Archives (PR10,241).