Multiplex originally won the job last February but developer Qatari Diar Europe suspended the start of work on site and the tender race was re-started.

The latest phase of Chelsea Barracks involves construction of 97 luxury apartments arranged over three buildings which will also include a spa, tennis courts and a wellness centre.

Phase four will also be home to two garden squares and is due for completion by summer 2022.

Abdullah Al Attiyah, CEO at Qatari Diar, said: “2019 marks a number of significant milestones for Chelsea Barracks, starting first with the appointment of Multiplex as the main contractor for the development’s latest phase.

“We’ve been on site working on this next phase for the last 18 months, but this announcement demonstrates our long-standing commitment to Chelsea Barracks and London.

“While work on this stage of construction begins, we look forward to welcoming our first residents to their homes later this year as the first phase of apartments and townhouses complete, and the site opens to the public for the first time in over 150 years.”

Multiplex CEO Ashley Muldoon said: ‘We are extremely proud to have been awarded the main contract for the next phase of Chelsea Barracks, and to be working on a development that will transform the landscape of Belgravia.’