St Oswald's is constructed in roughcast stone with slate roofs.
 Its plan consists of a double nave, with a south porch and a southeast tower.
 The tower is battered (its walls incline inwards as the tower rises), it has lancet windows, and plain corner pinnacles.

Inside the church, the arcade has five arches rising from ground level, and four arches above.
 The arcade does not reach the ridge of the roof, but ends in the upper tie beams of the open timber roof.
 
In the church is a poor box dated 1648, and a balustered altar rail of 1725.
 The pulpit is in Arts and Craft style, and carved with fruits and flowers.
 The font is medieval, and consists of an octagonal bowl on a stepped base.
 The stained glass includes a window on the north side of the church from about 1926 by Shrigley and Hunt, and two windows on the south side from the 1890s by Henry Holiday.
 There is medieval glass in windows on the south side of the chancel.
St Oswald's is constructed in roughcast stone with slate roofs.  Its plan consists of a double nave, with a south porch and a southeast tower.  The tower is battered (its walls incline inwards as the tower rises), it has lancet windows, and plain corner pinnacles.
Inside the church, the arcade has five arches rising from ground level, and four arches above.  The arcade does not reach the ridge of the roof, but ends in the upper tie beams of the open timber roof.  
In the church is a poor box dated 1648, and a balustered altar rail of 1725.  The pulpit is in Arts and Craft style, and carved with fruits and flowers.  The font is medieval, and consists of an octagonal bowl on a stepped base.  The stained glass includes a window on the north side of the church from about 1926 by Shrigley and Hunt, and two windows on the south side from the 1890s by Henry Holiday.  There is medieval glass in windows on the south side of the chancel.
St Oswald's Church, Grasmere