Determination under Class R of Part 3 of Article 3, Schedule 2 to the Town and Country Planning (General Permitted Development) (England) Order 2015 (Amended) as to whether prior approval is required in respect of transport and highways impacts, noise impacts, contamination risks and flood risks for the change of use of an existing agricultural building to a flexible use falling within Class E (commercial, business or service) for use as an office falling within Use Class E