Thursday 30 April 2015 (1221) - Arriva the Shires 3912 (BV58 MLF), a Mercedes-Benz Citaro O 530 new in October 2008, leaving Luton Station Interchange on service 321 to Watford. The ‘Sapphire’ branding is used in different parts of the country by Arriva using buses with leather seats, wi-fi, etc.