
Acting for engineering contractors, government and public sector bodies, and institutional investors, the energy, project, and construction team at CMS supports clients with a wide variety of matters, including regeneration, nuclear power, and energy-from-waste projects. Chris Hallam heads the team and has significant experience in structuring, negotiating, and drafting contracts for energy, construction, and infrastructure projects. Nick Case specialises in dispute resolution procedures and dispute avoidance in the sector, while Tim Williams focuses on nuclear and renewable energy development. Helen Achilleos is another notable member of the team.
Legal 500 Editorial commentary
Key clients
- AtkinsRealis
- Mace Construction
- The MEH SZC Alliance
- Sanofi SA
- Dragados Construction
- Polish Government
- Ansaldo Nucleare S.p.A.
- Sargent & Lundy Engineers Ltd
- Flour B.V.
- Equitix
- National Grid Electricity Transmission PLC
- Equans Group
Work highlights
Advising separate joint ventures comprising international contractors on the C3&4 new build nuclear plant and the C1 nuclear retubing and refurbishment project at Cernavoda, Romania (combined contract value c 5.2bn Euros).
Advised National Grid Electricity Transmission PLC on the £4.3bn EGL2 subsea cabling project, the longest HVDC cable in the UK and will be the UK’s single largest electricity transmission project, providing enough electricity to power two million UK homes.
Advising five nuclear contractors on the c £4bn Sizewell C MEH alliance contract.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Helen Achilleos
Practice head
Chris Hallam
Other key lawyers
Nick Case; Tim Williams; Helen Achilleos
