National Highways is seeking specialist technical consultants to undertake the re-write of both GG 951 & GS 952 in line with the Manual for Development of Documents (MDD). The update of both GG 951 & GS 952 is a requirement of the MDD v6.5 in which s20.6 states 'the first document review shall be scheduled for completion 4 years after the documents initial publication date, allowing up to a year for the changes to go through the governance process and be published within ...