Stephen Fox, chief executive of Surrey-based BAM Nuttall, said it was "delighted" to be starting work for Network Rail.

BBC: Borders to Edinburgh rail route main contractor agreed

The plans were approved and funding was awarded to the council in 2006 who contracted BAM Nuttall Ltd to carry out the work.

BBC: Cambridgeshire guided busway opens to passengers

Construction by civil engineers BAM Nuttall should be finished in June but bus drivers will need training on the route before it can open.

BBC: Luton-Dunstable guided busway delayed and over budget

Contractors BAM Nuttall will run buses between Cambridge and St Ives to ensure the sensors, that trigger the traffic lights to give buses priority, work.

BBC: Cambridge guided busway checked amid row over delays

The council said if any defects remained once BAM Nuttall had completed the work, it would be done by another firm and paid for by BAM Nuttall.

BBC: Cambridge guided busway checked amid row over delays

It was expected to open in spring 2009, but has been beset by delays and financial disputes between Cambridgeshire County Council and its original contractor BAM Nuttall Ltd.

BBC: Cambridgeshire guided busway opens to passengers