HS2 has started excavation of the final tunnel bore on the 140-mile railway between central London and the West Midlands – the down tunnel from Old Oak Common station in west London towards Euston – HS2's terminus.
The tunnel boring machine (TBM) is named Karen after Karen Harrison, one of the first female train drivers in the UK, who drove out of Old Oak Common depot.
Best of all, Green Signals was aboard to witness the launch of this, the last of 11 TBM’s on the HS2 project.
To watch click on the following:
