 The contract was awarded to four delivery partners Balfour Beatty, Carillion and joint ventures BAM Nuttall/Morgan Sindall Group and Costain Group/Serco.In January 2012, Carillion won the contract for M6 junctions 5 - 8 near Birmingham for £126 million.In early 2018, the contracts previously awarded to Carillion were taken on by Kier, following the collapse of Carillion.