Micochip design giant Arm Holdings is to expand in Manchester city centre after signing the largest office deal yet announced at Gary Neville’s £400 million St Michael’s development.

Arm is set to occupy 68,860 sq ft of space across floors three, four and five at No.1 St Michael’s after signing a deal with Neville’s Relentless Developments.

The semiconductor design group is moving from its current home at 11 Portland Street, Manchester, as part of its strategic plans for growth in the North of England.

Gary Neville, director at Relentless Developments, said: “This is an incredible deal with a hugely innovative, global leader in technology — not only is it our largest letting but it’s largest in the city for two years.

“This perfectly sums up the momentum that’s rapidly building here at St Michael’s as construction continues at pace.

“We’re looking forward to welcoming the team from Arm and being part of their future plans for growth.”

Gary Campbell, EVP, Central Engineering at Arm, said: “Arm deeply values creating environments that empower our people to do their best work.

“St. Michael’s not only brings a modern location with a rich heritage, but like Arm, prioritises sustainability and well-being. The Arm team looks forward to continued support of the Manchester community.”