Work will start next year on a sprawling 4,000-home estate which could cost up to £200 million and has been in the pipeline for almost a decade. The hugely controversial Mountfield Park is set to transform the south of Canterbury, having faced hundreds of objections from locals, a High Court battle and lengthy delays. But planning permission was finally granted in December 2022 and a multimillion-pound agreement between developer Corinthian and Canterbury City Council was signed off in July last year. The 550-acre plot is set to have two new primary schools, offices, community spaces, sports f…