Util-Locate 
Providing underground utility line locating services for privately owned utilities. Commercial and residential.
http://www.util-locate.comPer Aarsleff A/S Pipe Technologies
Renovates pipes and pipe systems using No Dig technologies. The No Dig division renovates e.g. pipes for potable water, discharge water, process water, rainwater, gas and district heating, and also vertical downpipes, and vent shafts.
http://www.aarsleff.com/
McNicholas Construction Company Ltd
McNicholas is the first choice utilities contractor in the UK with an enviable reputation in Telecommunications, Gas, Water, Electricity, Building, Rail Signalling and Telecomms. The McNicholas Group celebrates its 50th Anniversary in 1999. Services offered include trenchless pipe rehabilitation and trenchless new construction.
http://www.mcnicholas.co.uk/
Mersing Trenchless Construction
Areas of expertise include pipe jacking, microtunnelling, thrust boring and pneumatic punching. Malaysia.
http://www.mersing-const.com
