Kier has taken top spot in May’s contractor league table and overtaken Balfour Beatty for the year.
The contractor bagged 22 deals worth a total of £225.7m over the month, according to construction intelligence unit Glenigan.
A programme of healthcare works worth more than £100m helped secure Kier’s position in May’s table.
The contractor will deliver the works for the University Hospital of North Staffordshire NHS Trust under the ProCure21+ framework.
Lend Lease claimed second for the month thanks to a £151m deal with the Ministry of Justice to build a 2,100-capacity prison in Wrexham.
Other notable contract awards during May included Sir Robert McAlpine winning a £50m redevelopment at Newcastle University, Leadbitter securing a £100m regeneration job in Bedford and VolkerFitzpatrick beagging a £82m deal to build a maintenance depot and offices in Doncaster.
Kier also climbed to the top of the annual contractor table, having gradually caught up with Balfour Beatty since the turn of the year.
Over the 12 months to Mar 2014 Kier won 273 contracts totalling £1.88bn. Balfour Beatty is second with 135 deals at £1.74bn, while Morgan Sindall climbed to third with 192 contracts worth £1.28bn.
The Department of Health remained the top monthly client in May with a whopping 20 contracts awarded worth a combined £337.3m.