In 1513, Alexander Lauder of Blyth commissioned an aisle of two bays at the eastern end of the outer south nave aisle: the Holy Blood Aisle is the easternmost and only surviving bay of this aisle.MacGibbon and Ross 1896, ii p. 441. It is named for the Confraternity of the Holy Blood, to whom it was granted upon completion in 1518.Fawcett 2002, p. 335. The western bay of the Aisle and the pillar separating the two bays were removed during the Burn restoration and the remainder was converted to a heating chamber.Lees 1889, p. 262. The Aisle was restored to ecclesiastical use under William Hay. An elaborate late Gothic tomb recess occupies the south wall of the aisle.
