L1 Energy

Former UK government adviser and ex-BP chief executive John Browne took up a new position as executive chairman of this new Russian-backed energy investment outfit, L1 Energy in March 2015.

He relinquished his roles s chairman of fracking company Cuadrilla Resources and the managing director and partner of Riverstone Holdings, the venture capital firm that backs it. He also co-ran Riverstone's private equity renewable energy fund, reportedly the largest of its kind in the world.