Scoveston Fort, on the northern shore of Milford Haven, Pembrokeshire, Wales, U.K., is a Grade II listed building which is part of a series of forts built as the inner line of defence of the Haven following the Royal Commission on the Defence of the United Kingdom.

[3] Cost and the declining requirement for forts in the twentieth century meant that guns were never installed.

[5] Pembrokeshire writer George Owen proposed in 1595 the construction of a defensive triangle in the Haven, with forts on Thorne Island at Angle, Stack Rock in the centre of the waterway, and Dale Point; but this was costly, and was also abandoned.

Pill Fort, a small armed camp outside Milford, was built by the Royalists during the first English Civil War (1642 to 1646) but was taken in 1643 by the Roundhead (Parliament supporter) Rowland Laugharne.

After England declared war on France (Seven Years' War, 1756-1763), the area received some more attention:[4] in an Admiralty paper of 19 September 1757, "Mr Pitt, Principal Secretary of State, has informed the Admiralty that the Master General of Ordnance says that Lieutenant Colonel Bastide reports that a floating battery made of an old gunship will help to secure Milford Haven.....".

Then, in 1814 Pembroke Dockyard was founded at Paterchurch and required protection, so the forts on the Haven banks were completed[4] as part of the Palmerston fortifications.

Another line of defence was supposed to cover attacks from the north with a line of inland forts extending from Newton Noyes (by the now decommissioned Royal Naval Armaments Depot of Milford Haven) to Burton Mountain (east of Neyland).

[11] It was revealed following his conviction that serial killer John Cooper had visited the fort and had deposited items which he had stolen from nearby properties, and implements he had used to restrain victims.