Planned Skyscraper 1 Undershaft Across The River From London Landmark Will Be 73 Storeys Tall And Feature The Capital's Highest Public Viewing Gallery

Plans have been unveiled for a new London skyscraper that could rival The Shard for views across the city with the capital's highest public gallery. 1 Undershaft (pictured) will be 73-storeys tall at a height of 309.6 metres - exactly the same as The Shard, which it would sit across the river from. But its pavement to peak height will be around seven metres less than its rival because of the difference in level of the land they sit on.