 With the great quantities of brick, tile and other stone in Verulamium, the Roman site became a prime source of building material for the Abbey and other projects in the area.Sections demanding worked stone used Lincolnshire limestone (Barnack stone) from Verulamium; later worked stones include Totternhoe freestone from Bedfordshire, Purbeck marble, and different limestones (Ancaster, Chilmark, Clipsham, etc.