Thousands of British commuters are facing weeks of severe disruption because of engineering work at the country's busiest train station.
Almost half the platforms at London Waterloo are closed until 28th August.
It's for work to increase capacity at the station.
Commuters are being advised to leave extra time for journeys if they can't take holiday or alternative routes.
London Mayor Sadiq Khan is warning it's imperative the engineering is concluded on time.
IN: "If it….
OUT: …finish."
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