According to information specialist Glenigan, Kier secured 22 contracts worth around £343m.
Among the major wins Kier confirmed a £100m new hospital in Ascot and a £30m new cancer hospital in Bath.
In London, it secured the £130m Blossom Street scheme near Spitalfields market on the city fringe and the £20m National College for Digital Skills in at Tottenham Hale in North London.
Lendlease came in second place on the strength of its £330m order to deliver Manchester’s £330m Town Hall and Albert Square refurbishment programme.
Among the other big wins to open the year, Buckingham Contracting booked the £135m arena project in the first phase of the Swansea Central regeneration scheme, a consolation after the cancellation of the Bristol Arena project.
Costain secured the A19 Testo and Downhill Lane junction upgrades.
Balfour signed off a £214m deal from National Grid for the North and South 400kV overhead lines at Hinckley.
Farrans and Royal BAM have Third River Crossing for Norfolk County Council while McAleer & Rushe booked a £203m hotel project in Paddington for M&G Real Estate/Concierge.