Workers appear dwarfed by the giant tunnels built for the £14.8billion Crossrail scheme More than 23 miles - nearly 90 per cent - of the tunnels for the £14.8billion Crossrail project are now finished The scheme is 60 per cent complete and by 2018 high-speed trains will be running as far west as Reading Around 200 million passengers will travel on Crossrail each year and platforms will be 250m in length These pictures show the tunnels at Crossrail's Bond Street, Farringdon, Paddington and Liverpool Street stations Workers appear to be dwarfed by the vast tunnels being drilled beneath the streets of London for the ambitious £14.8billion Crossrail scheme which is now 60 per cent complete. After four years of subterranean drilling, the project to transform London's rail network has seen more than 23 miles - nearly 90 per cent - of the tunnels finished. The work is due to be completed in spring 2015 and by 2018 high-speed trains will be running from as far west as Reading in Berkshire, through central London to Abbey Wood in south London and as far east as Shenfield in Essex. These pictures show the vast underground caverns at Crossrail's Bond Street, Farringdon, Paddington and Liverpool Street stations. Crossrail chief executive Andrew Wolstenholme said: 'Crossrail is being delivered on time and on budget. These fantastic images show the scale of work taking place around the clock beneath the streets of London. We are on schedule to provide London and the South East with a fantastic new railway in 2018. Workers appear to be dwarfed by the vast tunnels being drilled beneath the streets of London as part of the £14.8billion Crossrail project After four years of subterranean drilling, the project to transform London's rail network has seen more than 23 miles of the tunnels finished The work is due to be completed in spring 2015 and by 2018 high-speed trains will be running from as far west as Reading in Berkshire Six of Crossrail's eight tunnelling machines have now completed their drives, pictured is Bond Street station in London Crossrail aims to shorten journey times and economic forecasts suggest the project will add up to £42billion to the UK economy Around 200 million passengers will travel on Crossrail each year and station platforms will be 250m in length to accommodate the 200m trains Crossrail chief executive Andrew Wolstenholme said: 'These fantastic images show the scale of work taking place around the clock beneath the streets of London' New Crossrail stations are being built through the central section of the route at Paddington, Bond Street, Farringdon and Liverpool Street