Call us on 01481 258123 or email [email protected] contact us

Dorey, Lyle & Ashman Ltd are the largest firm of Consulting Engineers in Guernsey. We specialise in structural and civil engineering design which includes most types of structures, foundations, external works, geotechnical and drainage schemes. We are experienced in many forms of construction and we design using a full range of building materials including, but not limited to steel, concrete, timber, masonry and glass.

Our Team

Our 11 staff members have a wide and varied range of experience in projects involving new build renovation and sensitive restoration.


The company was established in 1971 as ‘Dorey & Lyle’, the founding partners being Conrad Dorey and Eric Lyle. We were the first locally based firm of Consulting Engineers. We have a loyal staff with more than half having been with the firm for over 20 years. In 2022 we celebrated 50 years in business.