The former Hospitium of St John stands to the north of St Laurence's Church, at the edge of the churchyard. The north aisle of the church formerly served as the hospital's chapel. The building is of flint and limestone rubble with ashlar facings, and several carved stones, presumably from the abbey, are incorporated into the rubble walls.

The Hospitium of St. John the Baptist was founded by Abbot Hugh II (1186-99) at a date between 1189 and 1193, and supported by a grant in free alms of the church of St Laurence, Reading. It also consisted of guest apartments for possibly up to 400 people. The hospital had been suppressed by 1480, and became a Grammar School at the instigation of Henry VII, In 1892 the building was restored by S. S. Stallwood as laboratories for the new University College. It later became a kindergarten and since 2011 the building has been home to The Co-operative Childcare day nursery.

The chip-carved and chevron fragments are all comparable with other material associtaed with the abbey.