The planning decision can take up to 16 weeks if it includes an Environmental Impact Assessment, which this will. However, we need to factor in time for an appeal, and possible referral to the secretary of state due to it being on Green Belt. 6 months is probably the minimum time we should work too.
However, once approved, construction times could be reduced if there is greater pressure to work to shortened timeframes. It is possible to claw back some weeks during this process to keep things on track, although I accept that there are also numerous factors that could cause further delay.