Blyth United Reformed Church

The Blyth United Reformed Church, formerly a Presbyterian church, was built between 1874 and 1876 by Thomas Oliver junior. It is constructed of brick in an English Garden Wall Bond pattern, with ashlar dressings, and has a Lakeland slate roof with terracotta ridge cresting. The building follows a T-plan, incorporating a hall and Sunday schools to the rear; the liturgical west end faces north, featuring a north-west tower and spire, with a south-west apsidal stair projection. The architectural style is Free 14th century.

The west front is flanked by large, stepped buttresses. It has boarded doors with ornamental ironwork, small lancet windows with linked hoodmoulds to either side, a multi-chamfered set-back above, two tall two-light windows, and a rose window in the gable. To the left is a short linking bay with a shouldered doorway within a pointed arch, and a three-stage tower. The tower features a chamfered plinth, moulded strings, a multi-chamfered set-back between clasping buttresses, tall paired bell openings with slatted louvres, and a lofty spire patterned in ashlar and brick, with a pierced band and small lucarnes at mid-height. To the right, the stair projection has a similar doorway and lancets above. The north and south walls each have five bays, with stepped buttresses and two tiers of paired lancets, except for the upper two-light window within a gabled dormer at the east. The rear hall consists of five bays exhibiting simpler detailing.

Inside, the church has four bays, with plastered ceilings above wainscoting. A panelled gallery runs around three sides, supported by cast-iron columns canted at the western corners and featuring a pointed arcade on the upper level. The roof has been recently restored, with raised half tie-beam trusses in the aisles. The eastern arch is filled by an organ, moulded on detached colonnettes and with a head-stopped hoodmould. There is an oak central pulpit and original numbered benches. Early brass light fittings are located on the gallery string. A memorial window depicting St. George is present.

A porch to the hall, and a small extruded block between the hall and the church, are later additions and are not considered to be of particular architectural interest.