Located adjacent to City Thameslink station, the 1990s office building will be renovated to create 200,000 sq ft of space in a project understood to be worth towards £100m.

The project will retain 91% of the reinforced concrete lift cores and 85% of the reinforced concrete walls.

Targeting BREEAM Outstanding and Well Platinum certification, the development is claimed to be net zero carbon in construction and operation.

100 New Bridge Street is the latest of seven current construction projects within the Fleet Street Area.

It is understood Ireland’s Errigal Contracts is being lined up for the drylining contract. The project is due to complete in early 2026.

Ged Simmonds, managing director of Private Sector at Mace, said:  “We are pleased to be partnering with Helical once again on another highly sustainable best-in-class office space at the heart of the City of London. Not only will this development be net zero carbon in construction and operation, but by retaining the existing structure and reusing existing materials, this scheme is leading the way in circularity.”