Politics'Quid pro quo': UK minister told North Sea leaders Sector Deal rests on decarbonisationLetter sent to OGUK by Kwasi Kwarteng laid out government's expectations in return for potentially transformational funding packageLetter: UK Minister of State for Business, Energy & Industrial Strategy Department, Kwasi Kwarteng, leaves Downing Street in September 2019Photo: REUTERS/SCANPIXRob WattsLondon