Exterior of the main courtyard wall of the great hall with SW bay.

A 5-sided bay (15' 6' wide by 12' 6' deep) is located at the S end of the W wall overlooking the main courtyard. The windows of the bays are arranged on 3 levels with 3 lights each on 3 of the sides. On the remaining 2 inner sides there is a single window of 2 lights on 3 levels.

The stained glass panes with coats of arms of former students are of a later date. Originally the windows were filled with heraldic stained glass, later damaged, removed for repair and lost (<i>VCH Lanc</i> 7.11).

On the opposite side, at the S end of the E wall, there is a parallel bay, which faces onto the kitchen courtyard.

According to the VCH there were originally windows on the E side to the N of the fireplace.