 All units are now in South Western Railway - branded South West Trains livery, and are due to be replaced on all South Western Railway routes by new Class 701 units from 2019-2020.The Class 460 electric multiple units (also known as 8Gat) were originally built for use on the dedicated Gatwick Express airport service to London Victoria.The units were delivered between 2000 and 2001 and like the similar Class 458 they were powered using 750 V DC current on the third rail.