All the internal light must come from the aisle windows which are accordingly very large.
The aisle windows are in two tiers with semicircular heads.
The aisle windows have been replaced, and late gothic chapels were added on the north side.
All have toilet and sink, an aisle window and a closet.
The south aisle west window and north aisle windows date from the mid 14th century.
There are also later 14thcentury fragments in the north aisle windows.
The south aisle windows are all square-headed, of three or four lights.
The stained glass has various 16th-century Flemish bits in the south aisle window.
There are fragments of 15th-century glass in the south aisle windows.
There are big panelled aisle windows which provide plenty of light in this church.