Two major British companies are on the cusp of signing a double deal to relocate their headquarters to a new office development in Stratford, becoming the latest firms to move into the Olympic Park.

Cancer Research and the British Council are understood to be in the final stages of negotiations to take office space in The International Quarter, a huge new office park being built in east London, next to the London Aquatics Centre and the Olympic Stadium where Great Britain triumphed in 2012.

Together, the firms employ several hundred people in London and are expected to occupy the whole of the new building, known as S9.

Stratford and the surrounding area has seen major regeneration in the years leading up to and since the 2012 Olympic Games, with the development of thousands of new homes alongside the Westfield shopping centre.

At a total of 4m sq ft, The International Quarter is one of the largest new commercial developments in Europe. Once completed, more than 25,000 people will work at the site each day.

The International Quarter will also become the new home of the Financial Conduct Authority and Transport for London from next year, both of whom signed a deal for earlier stages of the scheme in 2015 and will bring around 6,500 workers to the area.