The UK, US and Europe have sanctioned the importation of Russian oil and gas since the start of the full-scale invasion of Ukraine.     But from 2022, European nations have spent €10bn on Russian Liquid Natural Gas (LNG), and British companies are facilitating the trade.       Our economics and data editor Ed Conway sits down with host Niall Paterson to tell the story of how an obscure company based in an office block on a quiet street in Glasgow became an accessory in Vladimir Putin's war on Ukraine.  Producer: Rosie Gillott   Editor: Paul Stanworth   Promotions producer: David Chipakupaku