Construction of a single storey extension to the rear of the building involving the demolition of an existing single storey sheet metal workshop building; single storey tool room building in the western corner of the site for a temporary period of five years; a single storey mould repair building on the existing car park on the southern side of the existing building for a temporary period of five years and the installation of a c.814sqm mezzanine floor at first floor over the production area within the existing building to provide temporary staff changing facilities and a canteen and office accommodation.