New bogie brake vans were built between 1961 and 1964 for new fast goods freight services.The new vans were classed ZF and were numbered 1 to 45. The vans were fitted with freight type roller bearing bogies.
Between 1963 and 1967, the vans were fitted with 'BX' ( Box Express ) bogies and reclassed to ZLP_ with original numbers retained.
File c389m compiled by Peter J. Vincent, updated 22/3/2007