Allen & Overy (A&O) and Clifford Chance are among a line-up of firms to have been appointed to the first-ever legal panels for oil and gas giant PetroChina International (London) and its London subsidiary Petroineos Trading.

Other firms on the roster include King & Wood Mallesons, Dentons, Herbert Smith Freehills, Simmons & Simmons and Ince & Co.

The panel will cover work across Europe, Russia/CIS, Africa, and China, including commodity trading, regulatory and compliance, shipping, corporate, M&A, trade finance, liquefied natural gas (LNG) projects, disputes, Brexit, data protection, IT and employment.

PetroChina London was established in 2002 as the U.K. subsidiary of PetroChina International. The new legal panel will work with the company across the refining, trading, sales, storage and shipping sectors.

Petroineos, meanwhile, is an energy and commodity trading company based in London, which supplies crude oil to refineries, while it also provides freight, insurance, financing and storage services.

As it is the company’s inaugural panel, no term lengths have been confirmed as of yet.

Earlier this week, A&O and Dentons were also appointed to the first-ever legal panel for Cadent Gas, following the company’s split from National Grid in 2016.

Dentons was also successful in the most recent review of BP’s U.K. and international legal panel, which has been in place since January of this year.