The BOSS series was founded in 1995 under the regulations of the RAC Motor Sports Association and raced mainly in Great Britain. The series grew in popularity and later expanded to Europe, being renamed to "European BOSS" (shortened by the competitors to EuroBOSS) following the European expansion and the involvement of Paul Stoddart's European Aviation. The move to Europe resulted in increased investment into the series and an increased number of Formula 1 cars taking part in races. It mainly saw grids of around 12–15 cars, but on some occasions as few as five cars competed in a race.