Sections of Phoenix caissons can be found at:
Thorpe Bay, Southend-on-Sea – whilst being towed from Immingham to Southsea, the caisson began to leak and was intentionally beached on a sandbank in the Thames Estuary.
It is accessible at low tide.

Pagham, West Sussex – known as The Far Mulberry, it sank off the coast, settled and cracked and is now lying at about 10 m (33 ft) underwater.

Littlestone-on-Sea, Kent – caisson could not be refloated.

Langstone Harbour, Hayling Island – faulty caisson left in-situ at place of construction.

Littlehampton - caissons about 5 metres underwater and dived by novice divers
Portland Harbour, Portland, Dorset – two can be seen from the beach at Castletown
Beetles can be found at:
Bognor Regis, on the shore line West of Marine Drive, where it washed up a few days after D-Day.
Easily accessible at low tide
Garlieston, Wigtownshire - concrete beetle remains are accessible on foot on the north side of Garlieston Bay (Eggerness) and at Cairn Head on the south side of Portyerrock Bay on the road to Isle of Whithorn.

Other artefacts around Garlieston include a conspicuous stone wall at the back of Rigg Bay beach and the remains of a collapsed Hippo visible at low tide.

Southampton, Town Quay - A short section of 'Whale' Roadway & a buffer pontoon, used post war for Isle of Wight ferries, but now derelict, survive between the Royal Pier & the Town Quay car ferry terminal.
Sections of Phoenix caissons can be found at:
Thorpe Bay, Southend-on-Sea – whilst being towed from Immingham to Southsea, the caisson began to leak and was intentionally beached on a sandbank in the Thames Estuary. It is accessible at low tide.
Pagham, West Sussex – known as The Far Mulberry, it sank off the coast, settled and cracked and is now lying at about 10 m (33 ft) underwater.
Littlestone-on-Sea, Kent – caisson could not be refloated.
Langstone Harbour, Hayling Island – faulty caisson left in-situ at place of construction.
Littlehampton - caissons about 5 metres underwater and dived by novice divers
Portland Harbour, Portland, Dorset – two can be seen from the beach at Castletown
Beetles can be found at:
Bognor Regis, on the shore line West of Marine Drive, where it washed up a few days after D-Day. Easily accessible at low tide
Garlieston, Wigtownshire - concrete beetle remains are accessible on foot on the north side of Garlieston Bay (Eggerness) and at Cairn Head on the south side of Portyerrock Bay on the road to Isle of Whithorn.
Other artefacts around Garlieston include a conspicuous stone wall at the back of Rigg Bay beach and the remains of a collapsed Hippo visible at low tide.
Southampton, Town Quay - A short section of 'Whale' Roadway & a buffer pontoon, used post war for Isle of Wight ferries, but now derelict, survive between the Royal Pier & the Town Quay car ferry terminal.
Mulberry harbour