First Utility is a supplier of gas and electricity in the United Kingdom, based in Warwick. Despite having a market share of less than 1%, in October 2013 the company was ranked as the seventh largest supplier in the UK, making it the largest outside the Big 6.
Unlike the Big 6, the company does not generate electricity, instead purchasing it from international markets. The company has a relationship with Shell, which sees it act as an intermediary to purchase wholesale energy on the global market. 
The company was launched in 2008 by co-founders Mark Daeche, Darren Braham and Marcus Citron as a spin-out from First Telecom. In January 2012 the company appointed the former lastminute.com CEO Ian McCaig as its new CEO.
In January 2014 the company signed a three year deal to become title sponsors of the Super League.
In September 2014, the firm announced it was considering an initial public offering or outside investment to fund foreign expansion.
Companies with headquarters and/or registered office in the UK but no applicable energy operations within the country shown in italics1Ultimate parent company is not UK-based 2Integrated in the United States, no generation or supply activities in the UK