East Sussex Hospitals NHSTrust says it can't recruit enough specialist staff at Eastbourne Hospital so expectant mums would have to travel to the Conquest in Hastings. Campaigners fought off plans to close the department in 2008.
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Union members will hold rallies across the UK as part of the strike action over a rejected 1.1% pay offer.
Wednesday morning's weather for the east of the region
Wednesday morning's weather for the west of the region