Welcome to Miller & Middleton Limited. The longest established SEAT dealer in Essex and a family run business. We are proud of our heritage and experience that will see us celebrate our 20th anniversary in March 2014.The Miller and Middleton SEAT dealership is fully accredited to SEAT SSQMS Brand Standards offering a full range of SEAT in Essex including exciting new SEAT models, an extensive choice of used SEAT vehicles as well as providing full aftersales facilities to take care of all your requirements promptly and efficiently.