| Contributing firm | Author(s) |
| England | |
| Ashurst LLP | Daniel Reinbott |
| Erin Dyer | |
| Geoffrey Picton-Turbervill | |
| Huw Thomas | |
| Jubilee Easo | |
| Nicholas Ross-McCall | |
| Sharon Wilson | |
| Chadbourne & Parke | Charez X Golvala |
| Hogan Lovells International LLP | Nina Howell |
| Richard Tyler | |
| Holman Fenwick Willan LLP | Mark Morrison |
| Infrastructure Development Partnership LLP | Thomas J Dimitroff |
| William E Browning | |
| King & Spalding International LLP | Garry Pegg |
| Peter Taff Independent Consultant | Peter Taff |
| SNR Denton | Danielle A Beggs |
| Justyna Bremen | Netherlands |
| Shell Group | Flavia Kaczelnik |
| The Royal Dutch Shell Group | Mark Osa Igiehon | Singapore |
| Ashurst LLP | Melanie Williams |
| Ince & Co LLP | Denys J Hickey | United Arab Emirates |
| Ashurst LLP | Daniel O'Neill |
| Mhairi Garcia | USA |
| Baker Botts LLP | George Goolsby |