The second consultation for Crossrail 2, linking south west London with central and north east London, will begin today.
Transport for London (TfL) and Network Rail have today launched the second consultation which will look at variations to the proposed route.
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Merton and Wandsworth London Assembly member Richard Tracey said he urged residents and businesses to support the proposals which could see Wimbledon connected to Seven Sisters, in north east London, via Tooting, Clapham Junction, and a number of central London stops.
From Wimbledon, the train would travel through an underground tunnel to Tooting Broadway, Clapham Junction, Chelsea, Victoria, Tottenham Court Road, Euston, Angel, Dalston Junction, Seven Sisters and Epping.
It could also extend to Hampton Court, Twickenham, Epsom and Chessington South.
Two alternatives have been identified: an underground ‘metro’ option from Wimbledon to Alexandra Palace and a ‘regional’ option that would link to more national rail stations and extend north into Hertfordshire.
Mr Tracey said: "This is very farsighted for south London, Wandsworth and Merton. I encourage residents and businesses to support it."
Mayor of London, Boris Johnson, said: "If London and its economy are to keep moving then it’s essential that we crack on and get Crossrail 2 delivered.
"It’s a vital project not just for the capital, but also for the regions from which hordes of commuters struggle into work on packed carriages each day."
The consultation will run for six weeks, from today until July 25.
More information can be found at www.crossrail2.co.uk.