HS2’s demolition of Grant Thornton House and One Euston Square – designed by modernist architect Richard Seifert – has reached ground level.

The scheme’s enabling works contractor, a joint venture between Costain and Skanska, has completed two years’ worth of demolition work, taking the 1970s towers down to make way for Grimshaw’s London terminus of the £100bn railway.

The site has now been handed over to main station contractor, a Mace Dragados joint venture, who will complete the demolition of the basement below in preparation for main construction works at the site.

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