The east wall of the north arm of the #Transept# has a buttress, as is the case with the south arm.  But early thirteenth-century pointed windows take the place of the round-headed ones.  There are, however, three string-courses on this wall of the north arm which do not appear on the south.  One is the old twelfth-century string which evidently once ran along above the old round-headed windows.  The next is a continuation of the abaci of the capitals.  The other passes under the sills of the windows.  A comparison of this wall with that corresponding to it in the south of the transept shows that for some reason the windows here were totally changed and the others only partially.  This may suggest that at the time of the fire this part was more damaged than the other.  The parapet on this wall is unlike that at the top of the presbytery and choir walls.  It has no corbelling and no arched and cusped work; it is merely a plain piece of walling, slightly overhung with a weathered coping at the top and a moulded string beneath.

The general features in the design of the north end of this transept are similar to those of the south.  The gable sets back from the face of the lower wall as before, and in it is a rose window, also based on the hexagon principle in design.  It is later in character than either of the other large rose windows in the south of the transept and the east of the presbytery.  Like the others, it has been much repaired.  The two irregular octagon turrets on each angle are of the same date as those on the south, and, like them, have weathered and battlemented parapets to the top of their side walls.  The parapet of the north wall between them is of the same design, detail, and date as that on the north and south walls of the clerestory to the nave.

On the north-east angle are two buttresses; and on the north-west angle there is a group of buttresses of a later type.  On the west there remains the old twelfth-century flat buttress, like those on the south-west angle of the transept.  Westward of this, and standing clear of the wall, is a fine fourteenth-century flying-buttress.  Projecting northwards, but attached to the north-west angle, is a vertical buttress of the same date as the flying one close to it.

On the west side, this part of the transept almost repeats what is to be observed on the east; but the parapet here is the same as that on the north end, and near the ground is one of the twelfth-century windows.  The arch-mould of its rounded head is the same in detail as those in the priest-vicars’ vestry and in the chamber above the present library.  It seems to be an example of that later work of the twelfth century of which other specimens no doubt remained in the walls of the lady-chapel before Bishop Gilbert transformed it into its present state.  Close to this window, and rising up just above the sill of the clerestory windows, is a narrow, flat buttress, which is probably of the same date as the window.  Its upper half has an attached shaft on each angle, with moulded bases and carved capitals of the same period; but the weathering on its top appears to have been changed in the thirteenth century.