Castle Keep & Co - Surveying and Engineering Formed in 2016 by industry professional Mick Dixon (formerly Managing Director of Mapline Services & Quicksurv) Mick - an engineer and surveyor of over 20 years has led the way in underground utility surveys in the North and much of the UK. Our 'Zero Dig' specification on underground utility location formed the basis of Balfour Beatty's guidelines and has been referred to as "The standard to which all underground utility surveys should be carried out"