The Lledo Cataloguing system by RDP Publications indicated that LP models are those with a tampo printed artwork finish. The numbering system is simple and consists of the prefix letters followed by the model type as below. The next three digits refer to the livery name. The suffix letter would signify any variation to the original livery, for example a variation in colour. The suffix letter "X" indicated that the models were delivered to the client for their completion.
LP30, the 1939 Chevrolet Sedan Delivery Van was first introduced in 1989, along with LP33 the 1920 Model T Ford Car, LP34 the 1932 Dennis Delivery Van, LP35 the 1932 Dennis Limousine and LP39 the 1934 Mack Truck.
LP31, the Horse Drawn Brewers Dray and LP36 the 1938 Chevy Pick Up were introduced to the range in 1991.
LP37, the 1930 Ford Model A Panel Van and LP38 the 1925 Rolls Royce Silver Ghost Saloon first appeared in 1990.
The 1907 Rolls Royce Silver Ghost never appeared as an LP32 model.