Crossrail would not open to the public until 2022, renamed as the Elizabeth line. Yet it was already possible to catch a train in 2014... if you had security clearance and full personal protective equipment.
In 2014, we acquired both in order to inspect the tunnels beneath Limmo Peninsula near Canning Town. From there, we boarded a workers' train through to Canary Wharf Crossrail station.
Video by Geoff Marshall. Photos by M@.