Nave is externally late C17 with moulded-surround windows in aisles and in clerestory.
Transepts are late C17, that to south with Lowther arms in pediment.
Chancel has C17 priest's doorway and tall round-headed windows, 2 in east wall.
Interior of porch has free-standing remains of 3 hog-back coffin lids and a saxon cross shaft.
Similar round arches of south arcade are supported by C13 octagonal piers.
Font c.1686 inscribed TA.
NY5124 : Lowther, St. Michael's Church: Baluster font with small bowl c18th
Various marble wall plaques to members of the Lowther family and C20 heraldic stained glass in south windows.
NY5124 : Lowther, St. Michael's Church: Stained glass window 1, dedication
Hanoverian Royal Arms of the 3rd period on gallery and pater boards above.
elaborate wall plaque of 2 busts with garlands and railed backdrop to John Lowther and Lord Lowther 1675.
More C19 and C20 marble and brass monuments and wall plaques to members of the Lowther family in south transept and in chancel.
Dado panelling looks C17 but altar rail is C19 imitating C17.