Established over 20 Years!! VIEW OUR CARS AT OUR INDOOR SHOWROOM. If you are looking for great savings on quality used cars in the Northamptonshire, you have reached the right place. Regency Cars are a specialist used car dealer, proud to offer you first class customer service from pre-sale to after sales care with some of the most competitive prices around. We stock a wide range of used cars to suit all budgets and lifestyles so please browse our stock list. We realise that buying a car can be a daunting experience, but don’t worry, we’ve been established for 20 years and come with a great reputation. We offer excellent advice and experience on vehicles to suit your requirements.