William marched around the south coast of England via Dover to Canterbury which surrendered to him. From there he attempted to enter London but was forced back. He then encircled London, taking control of the towns around it. At Wallingford, a crossing point of the Thames, he built another castle. He built another at Berkhampstead before London finally surrendered. After becoming King William marched across the south of England building castles and taking control. At Exeter he had to lay siege to the town until an agreement was reached. He then built a castle there.

Castles built in the reign of William the Conqueror

As the Normans spread out to conquer their new lands, they chose to build their motte and bailey castles in locations where they could be on hand to put down revolts. They built inside or near existing towns, usually on high ground or where there was a good water supply. In the early years the Normans heavy handedly cleared whatever was in their way to build where they wanted, knocking down housing and striping local areas of building materials. Later on when their position was more secure, land was bought or swapped for other areas.

When looking at a map of Norman castles, it can be seen that there is a concentration of sites on the Welsh borders. This probably shows that the Normans had problems controlling their Welsh neighbours and had to keep a watchful eye on them.

Records do not exist showing the exact number of castles that were built by the Normans after they invaded but there must have been hundreds.

Castles ordered by William

William the Conqueror ordered the construction of several castles himself.

Motte and Bailey castles

Castles mentioned in the Domesday Book

The Domesday book lists around 48 or 49 castles at the time of it's compilation. The list was probably incomplete. (List taken from 'The English Castles' E.B.D'Auvergne). Dates are approximate.