The nave is aisled, but the chancel and transepts are not. A rood screen was installed between the chancel and nave. It consists of a nave, chancel and north aisle. The church had a nave and an chancel. It had a rectangular chancel and a nave with four bays for side altars. At the nave near the chancel steps, old Regimental colours hang from the pillars. The new cathedral consisted of a double chancel with two transepts. Samuel Sanders Teulon added the chancel and the apse in 1880. The ceilings of the chancel, baptistery and the crossing under the tower are rib vaulted. Access was via a narrow rood stair set into the piers supporting the chancel arch. The presbytery is often adorned with chancel flowers. The Martyn Chapel is situated to the south of the chancel. This was a big aisled cathedral with a long chancel. The school chapel was enlarged by adding a chancel and a gallery in 1948. Older still is its "good" chancel of 1250 with stepped sedilia and piscina.