The North Brook is a small watercourse in Rutland in the East Midlands of England.

It then flows through a deep gully and into the parkland of Exton Hall where it has been dammed to create two ornamental lakes.

On the western side of the upper lake stands Fort Henry, a pleasure-house built in 1788 in the elegant Gothick style.

[1] After the lower of the two lakes it passes to the west of the deserted medieval village of Horn, before flowing under the remains of the Exton Park wall.

Shortly afterwards, it is joined by a small unnamed tributary which flows through Ry Gate Lake in the grounds of Exton Hall, and later through the bed of a drained lake near Cuckoo Spinney.