John Heffernan and Ken Greenley were officially retained to complete the design of the Continental R. They had run the Automotive Design School at the Royal College of Art and headed up their own consultancy, International Automotive Design, based in Worthing, Southern England. Greenley and Heffernan liaised constantly throughout the design process with Graham Hull. The interior was entirely the work of Graham Hull and the small in house styling team at Rolls Royce. The shape of the car was very different from the somewhat slab sided four-door SZ Rolls-Royce and Bentley of the time and offered a much improved coefficient of drag of . The Continental R also featured roof-cut door frames, a necessity to allow easier access into the car which had a lower roofline than its 4-door saloon contemporaries. A subtle spoiler effect was also a feature of the rear. The finished car is widely acknowledged as a very cleverly and attractively styled vehicle, effectively disguising its huge dimensions (the Continental R is around 4-inch longer than a 2013 long wheelbase Mercedes S Class).