The centenary cars are single deck trams with flat ends and doors positioned at both the front and centre giving them a more bus-like appearance. They are numbered 641–648 and have a capacity of 52 passengers (of which 16 is standing). They can be operated by one person, as the position of the doors means that the tram can be solely operated by the driver, as opposed to a team of three. This is useful during low season and early morning/late night services when there is little demand, as it allows the network to keep labour costs down.
Centenary cars were built by East Lancashire Coachbuilders in 1985, the tramway’s centenary year, hence their name. Originally intended to replace the OMO cars which were suffering from metal fatigue, twelve were ordered. However, due to cost cutting only seven were ever built. The cost cutting continued as, although the bodies chassis and bogies were brand new the motors and wheelsets were pre-war, refubished from various withdrawn cars. The bogie design continued the theme of the “O.M.O.” and L.T. Underground cars, having “Metalastik” rubber/metal bonded springs.