Historic England has added three historic buildings in Sussex to its “at risk” register over fears parts of them could be lost for ever.

The group says the Grade I listed Church of St Michael and All Angels in Plumpton, the Grade I listed Church of All Saints in Buncton, Wiston, and the Grade II* listed Polegate Windmill urgently need to be restored.

The Argus: Church of St Michael and All AngelsChurch of St Michael and All Angels (Image: N Chadwick)

The church in Plumpton has a nave dating back to 1100 and a tower from around 1200.

Inside are rare surviving Norman wall paintings but internal damp is putting the paintings at risk of deterioration.The Argus: All Saints Church, BunctonAll Saints Church, Buncton (Image: Dave Spicer/All Saints Church, Buncton)

In Buncton, the 13th century parish church is also facing problems with moisture but the congregation which still uses the building hopes to raise funds for repairs.

Most severely affected however is 19th century Polegate Windmill, which requires extensive waterproofing work.

The three sites are among 15 to be added to the register in the South East because of concerns about their condition.

Remaining on the list from last year is The Langney Priory, in Eastbourne, which was built by the Cluniacs before 1121, has also been added to the register due to the need for urgent repairs, with damage to the roof, evidence of water ingress, rotting timbers and movement that has caused damage and cracks in the walls.

The Argus: The medieval Grade II listed building is one of the oldest in Eastbourne, but needs urgent repairThe medieval Grade II listed building is one of the oldest in Eastbourne, but needs urgent repair (Image: Historic England)

Historic England is working closely with the site’s owners to save the building, believed to be one of the oldest in Eastbourne.

Elsewhere, Brighton Hippodrome remains on the list, but its condition has been ranked “fair”, having previously been listed as “very bad”.

The Argus: Polegate WindmillPolegate Windmill (Image: Google Maps)

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A spokeswoman for Historic England said: “A comprehensive condition survey and work to improve the mill’s condition and make it weather tight is urgently required.”

Historic England has awarded more than £1 million to fund restoration projects around the country in the past year, and it is hoped that many more can soon be removed from the risk register.

The register is now in its 25th year with roughly 6,800 projects removed from the record since its creation.