A huge scheme to redevelop Liverpool Street station which include proposals by Herzog & de Meuron for a 20-storey block above part of the concourse are expected to go in to City planners next spring, Building understands.

Shard developer Sellar is speaking to Network Rail about the job which will involve creating over one million sq ft of mixed-use space at the site as well as revamping the third busiest station in the country with new entrances at its southern end. It will also include building a new two-level concourse which is designed to reduce overcrowding at the station.

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