Vickers itself had been working on a stretched Viscount with British European’s order launching the series 801 on February 11, 1953. It entered service on February 18, 1957 by which time another of the smaller US trunk airlines had shown interest in the Viscount after seeing the boost it had given Capital. This airline was Bob Six’s Continental, which was looking for an uprated V801 capable of flying faster and further.
Using the more powerful Rolls Royce Dart 7/1 Mk525, which required strengthening of the airframe and undercarriage, the Viscount 810 was born and Continental ordered 15 in December 1955. Its machines would eventually be named V812s and were delivered from May 1958 in a spacious first-class seating arrangement with only 52 seats, two abreast. The aircraft even had a four seat lounge area aft of the galley – something that was up till then unheard of on a short-medium range airliner. They also had retractable forward airstairs, a feature that had also been adopted by Capital’s V745s. Despite the difficult hot and high conditions across much of Continental’s network (especially at its Denver base) the Viscounts once again proved that the type was a model of efficiency being able to break-even at an incredibly low 38% load factor.