As of 3rd April 2017 Michael Evans and Associates has officially joined the Signal House Group Ltd.

As part of the changeover Shane Litchfield has been appointed as Managing Director of MEA.

Signal House Group Ltd combines the expertise of 3 separate organisations. Collis Engineering Ltd, Signal House Ltd and Collis Civil Engineering. The companies operate primarily in the UK railway sector. Their offices are located in Alfreton Derbyshire and Leighton Buzzard Bedfordshire.