| | Jarvis |
| | £3 million |
| | Kirklees, Yorkshire |
| | Oct 2002 |
| | Sep 2004 |
| | Volker Wessels UK |
| | £600,000 |
| | Tottenham, London N17 |
| | Sep 2017 |
| | Apr 2018 |
| | Balfour Beatty Rail |
| | £400,000 |
| | Stockwell, Mile End and Whitechapel, London |
| | Nov 2020 |
| | Apr 2021 |
| | Primus Construction Ltd |
| | £350,000 |
| | Twickenham, Greater London |
| | Jun 2016 |
| | Sep 2016 |
| | Signalling Solutions |
| | £532,000 |
| | Hertfordshire |
| | Jan 2009 |
| | Aug 2009 |
| | Jackson Civil Engineering |
| | £3.5 million |
| | M3 motorway |
| | Nov 2006 |
| | Nov 2007 |
