The Quadrant:MK is Network Rail's national operations centre in Milton Keynes.

After being topped out in April 2011,[1] it opened in June 2012.

[2][3] The complex consists of four linked buildings with 37,000 square metres (400,000 sq ft) of space, and is designed to accommodate 3,000 staff.

[4][5] The complex was designed by GMW Architects and built by Royal BAM Group.

[5] The centre is on the site of the former England National Hockey Stadium, adjacent to Milton Keynes Central railway station.