Established in 1994 by John Ropkins BSc,CEng MICE, the consultancy is based in the county of Kent in the United Kingdom.

John Ropkins has over twenty five years experience in the development, design and construction of jacked box tunnels of various types including subways, single and multiple tier bridge abutments and large box tunnels. He has been responsible for many patented innovations including the 'anti-drag system' that separates the moving box from the adjacent ground thus minimising drag induced ground disturbance.

The consultancy has worked on several projects in the UK with main contractor Edmund Nuttall Ltd, and with its sister company Interbeton Inc. in the USA.

Projects undertaken recently include major highway tunnels beneath multiple railway tracks in Boston USA for the Boston Central Artery/Tunnel Project, the largest jacked box tunnel in the UK at Dorney near Maidenhead and the first jacked box tunnel under a live motorway in the UK at M1 Junction 15A, Northampton.

The jacked box tunnels project in Boston won the British Construction Industry International Projects Award 2002 and was a finalist in The Royal Academy of Engineering MacRobert Award 2002.

In addition to jacked box tunnelling, the consultancy also specialises in box tracking, a patented technique for moving large structures horizontally, and in the raising and moving of complete buildings. It is highly experienced in major temporary works design, construction methods and the contractor's working environment.