The contractor has been awarded a £10m scheme by Brit Insurance to create a new UK headquarters for the global speciality insurer and reinsurer.
ISG will deliver a high-specification Cat B fit out across five floors of the Cheesegrater totalling 66,000 sq ft across levels 16 to 18 and levels 39 and 40.
Matt Blowers, managing director of ISG’s UK Fit Out business, said: “With over 90 per cent of The Leadenhall Building now let, our expertise delivering live environment, multi-level projects in high-profile office developments will prove essential to a successful outcome.
“Our appointment at an early stage in the scheme, through a two-stage tender process, has proved highly beneficial in navigating the project’s complex logistical challenges – enabling the development of innovative solutions to deliver this key win for ISG.”