Wilkinson Eyre has formally submitted its proposals to turn London’s Kingsway Exchange Tunnels into a subterranean tourist attraction that will draw in up to 2 million visitors a year.

The practice revealed details of the plans for the tunnel network 40m below High Holborn in autumn last year, as part of a pre-application consultation.

Now the project for client London Tunnels Ltd, a private company run by Australian banker Angus Murray and backed by a private equity fund, has taken a step forward with the submission of plans to the City of London Corporation and the London Borough of Camden.

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