BP and Riverstone Holdings who served as energy policy adviser to prime minister David Cameron at Number 10 until May 2013, when he was replaced by ex-Centrica lobbyist Tara Singh.
- 2007-2011 - vice-president Riverstone Holdings, which owns 45 per cent of fracking firm Cuadrilla
- 2011-2013 - Senior policy adviser, David Cameron and Nick Clegg for Energy and Enviroment 
- 2013-2014, Director Clean Energy Infrastructure at Capital Dynamics
See: Fracking Spads
- Melissa Jones and Andy Rowell, Access all areas: Westminster's (vast) fracking lobby exposed, 29 April 2015.