Sealand, Flintshire

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Aa stbartschurch sealand flintshire wales.jpg
St Bartholomew's Church, Sealand
Grid reference: SJ352688
Location: 53°12’43"N, 2°58’12"W
Population: 2,946  (2011)
Post town: Deeside
Postcode: CH5
Dialling code: 01244
Local Government
Council: Flintshire
Alyn and Deeside
A view in Sealand, Flintshire. Fertile market gardening land. In 1700 it was tidal sand and mud flat.

Sealand is a parish in Flintshire, on the edge of the Wirral peninsula. It forms part of the Deeside conurbation to the west of the city of Chester. At the 2001 Census, it had a population of 2,746 (1,342 males, 1,404 females),[1] increasing to 2,946 at the 2011 census.[2]

Sealand is on flat land formed by land reclamation of part of the head of the estuary of the River Dee which had become heavily silted-up. It is on the A548 road, near the Chester dormitory communities of Blacon and Saughall.

The Dee flowed to the sea forming the county border between Flintshire and Cheshire, until in the 18th century it was diverted into its present channelized course (entirely in Flintshire) to try to improve ship access from the sea to Chester. That led to extensive land reclamation in the head of the Dee estuary. The River Dee Company (1741-1902) had a right to reclaim the marshes and build embankments following the re-alignment of the Dee.[3]


  • 1732: Nathaniel Kinderley proposed the scheme.[4]
  • 1735-1736: Nathaniel Kinderley & Company cut the new Dee channel from Chester to Golftyn.
  • 1737: The new Dee channel was opened for shipping.
  • 1740: Kinderley's company became known as the River Dee Company.
  • 1753: First polder made: (the land where now are the) Shooting School, Sealand Manor, Garden City, about as far as Hawarden Bridge.
  • 1754: Polder made: Ferry Lane Industrial Estate, Thornleigh Park, Sealand Nursery, Deeside House.
  • 1768: Polder made: Bank Farm, Birchenfields Farm.
  • 1790: Polder made: Yewtree Farm, Church Farm, Sealand village, Waterloo Farm,[5] Willow Farm.
  • 1826: Polder made: Old Marsh Farm, rest of low land east of where the A550 road is now.
  • 1857: Polder made: where the Deeside Industrial Park is now. (In the 20th century this area was raised 8 feet by sand pumping.[6])
  • 1861: The thousands of acres of reclaimed marshlands around Sealand and Saltney were raising £8000 in annual rent.
  • 1865-1867: St Bartholomew's Church was built.
  • About 1880: West of the Dee, a polder including Beeches Farm (a little north of Hawarden Airport) was made.
  • 1892: Polder made: the Shotton steelworks.
Boundaries of these polders show as old dikes across the farmland.


RAF Sealand was originally a civilian airfield and was taken over by the military in 1916 for training. No. 30 Maintenance unit was formed there in 1939. In 1951 the station was taken over by the United States Air Force, and then handed back to the RAF in 1957.

As a result of defence cuts announced in 2004, RAF Sealand was closed in April 2006.

In popular culture

Orchestral Manoeuvres in the Dark (OMD), the globally successful new wave act from Wirral, recorded the song "Sealand" for their seminal 1981 album, Architecture & Morality.


Outdide links

("Wikimedia Commons" has material
about Sealand, Flintshire)