A gym will be shut for two weeks while a £200,000 upgrade takes place. The White Oak Leisure Centre in Swanley will be undergoing a transformation just two-and-a-half years after its grand opening. Everyone Active, which manages the facility in partnership with Sevenoaks council, is funding the project and says it’s in response to a significant 58 per cent membership surge since February 2022. The old centre, which was built in the 1960s, was deemed to be coming to the end of its life and too expensive to run. Instead, a brand new £20m replacement was built next door. At the time, the plans sp…