Today Network Rail services carry 50 per cent more passengers than ten years ago, equating to about four million people a day. Passenger numbers have increased at a fast pace and are expected to continue to rise. With demand increasing it is essential to carry out improvements and modernisations with smarter ways of working to deliver more frequent, more reliable, safer services and brighter and better stations, without causing major disruption to passengers. Much care needs to be taken in designing and planning major track renewal programmes to keep the disruption to a minimum. One way of minimising such disruption is to use virtual simulation technologies to go through the entire construction process and eliminate any design faults, and check the availability of machines and the validity of the construction sequence while ensuring the health and safety aspects of the workers.