The 27,000 sq ft Cat B fit out contract is for National Australia Bank across levels nine and ten of the tower.
Charles Edward’s London Division fought off competition from six rival firms to land the deal.
The firm used its in-house design team to create a unique office environment for the bank.
Work on the £4m contract is due to start imminently and take 22 weeks to complete.
Zoe Moss, Divisional Director at Charles Edward said: “I couldn’t be more proud of the team to secure such a prestigious fit out for such a fantastic client; we look forward to nailing the delivery.”