George Goldie, 1865; S aisle Bruce and Hay, 1906. Gothic church. Basilica-plan, aligned E-W; square 3-stage bell-tower with spire lean-to aisles and apse. Squared and tooled yellow sandstone with ashlar margins. Projecting eaves, coped parapet gables. Hoodmoulds to principal openings.
W (PRINCIPAL) ELEVATION: 4-bays, buttressed, gable end. Lancets to ground; large 3-light pointed arch to gablehead, geometric tracery. Set-back gabled porch to right; pointed entrance arch to centre, rolled moulding supported on engaged columns, quatrefoil set within a square moulded panel above square headed door; 2 narrow vertical vents to apex; cross finial; oversize crocketed buttress to right.
E (REAR) ELEVATION: semicircular chancel; dividing band, gabled, cusped projecting niche to upper centre, 3 lancets to each side, projecting eaves; flanked by returns to aisles, large oculi with unusual cusped star to centre.
S (SIDE) ELEVATION: belltower to centre-left, blank return of porch to left, 6-bay aisle to right, alternating advanced, gabled chapels and paired lancets. Each porch with paired lancets, quatrefoil to crossgable and cross finial except chapel next to tower.
TOWER: 3-stage symmetrical belltower; large lancet arch former main entrance to centre ground, roll-moulded to reveal supported on short engaged columns, outer gable entrance filled with paired lancets and multifoil; abutted by porch to left and aisle to right. Dividing band to 2nd-stage at nave eaves height; narrow recessed blind arcade to 2nd-stage; dividing band to 3rd-stage; plate tracery 2-light pointed arch opening with timber louvring, rolled moulding, raised quoins and engaged columns to reveals, large stone brackets to top; dog-tooth cornice; projecting stone gabled lucarnes to spire, alternate bands of plain ashlar and carved fishscales, finialed.
N (SIDE) ELEVATION: paired lancets to bays except advanced gabled porch to centre, paired lancets, quatrefoil to apex and cross finial; advanced wing of former boilerhouse to far right: buttresses and inset panel to gable end, battered wallhead chimney to right return.
Diamond leaded glass, lilies pattern stained glass to N chapel, modern stained glass to E end. Coped skews with gabled kneelers. Graded grey slates, decorative wrought-iron cresting to E end, lead flashing, decorative earthenware cresting to S aisle and boilerhouse roofs; moulded cast-iron rainwater goods with square hoppers.
INTERIOR: 4-bay nave, pointed arch arcading to aisles supported on columns with stiff leaf capitals; wooden gallery to W end bay; wooden panelled screen to W end; mosaic floor with cross motif to ground of tower off nave
BOUNDARY WALL AND GATEPIER: coped squared sandstone wall to E, S and W, single octagonal gatepier to W with blind cusped arcade to upper stage, cornice and pyramidal cap. Wrought-iron finial. Wrought iron gate.