Skip to content

UK Specification for Ground Investigation: Yellow Book Revision key changes

Event organised by ICE

22 November 2022

This event has now ended

You can catch-up on details or any broadcast and downloads here.


Following surveys during 2019 it became apparent that there was a need from the Ground Engineering industry to update the UK Specification for GI 2nd Edition, which first became available during 2009. The 3rd Edition was published May 2022 and now better caters for new legislation, standards and guidance published since the second edition. The most significant change for this edition is the aspiration to make tendering and pricing more “transparent” to all those involved. To that end there is a deliberate move away from the “lump sum” pricing, so that individual rates are used to derive the final tender sum.

This revision also reflects the changing practices, data capture and management, innovation, new technologies and growth of the geo environmental sector and associated ground investigation on potentially contaminated and contaminated land.


Steve Preedy

Steve Preedy


director of ground engineering

Read more

Steve Preedy

Steve Preedy is a Director of Ground Engineering at Jacobs, and both a Chartered Geologist and Chartered Engineer. He has an extensive knowledge of ground investigation and ground engineering involving a wide variety of problematic ground conditions. His experience has been gained while working on both traditional and more collaborative design and build schemes across a wide range of projects within the UK, Ireland, Kazakhstan, Turkey, Hong Kong and New Zealand.

Steve has spent a notable portion of his career designing, supervising and assessing ground investigations within the UK, Turkey, Hong Kong and New Zealand. This has included being the named Subject Matter Expert for Ground Investigation working as part of the Intelligent Client during the generic design development of the Wylfa Nuclear New Build on Anglesey Island, which included £8M of onshore and £4.5M of offshore drilling along with specialist in situ and specialist laboratory testing.

For more information please contact:

Vicky Judd