The Slough based specialist has picked-up a £3.6m package for the concrete foundations and superstructure for a ten-storey student accommodation block on the site.
Berkeley is planning four towers on the Goodman’s field site which will contain 754 homes, 601 student beds, a 337-bedroom hotel and 107,640 sq ft of office and retail space.
Mitchellson started preparation work this week while Lee Group completes its £2m demolition contract to tear down the former Royal Bank of Scotland cheque clearing centre which stood on the site.
Mitchellson will be working on the job until November 2012.
A company spokesman told the Enquirer: “It’s a very busy site down there with demolition still going on.
“We have been given a small part of the site to start work on and we are doing excavation and drainage works before the concrete basement and superstructure.
“It’s a decent sized job for us and caps a decent period where we’ve picked up three jobs in the last six weeks.”