Trent Design and Engineering Ltd - Nottingham

Chapel Engineering - Nottingham

Meden Vale Engineering Co - Mansfield

Firber Engineering Ltd - Nottingham

Intra City Construction Group Ltd - Manchester

Vision Precision Engineering - Nottingham

Trades 247 - Wolverhampton

Tunnel Engineering Services (UK) Ltd - Heywood

DSC Civils - Nottingham

CRS Plant & Agri Engineering Ltd - Newark