it said an over-reporting of the amount of renewable energy it was supplying caused by human error – and notified the regulator. Political activity Centrica entered the political arena in February 2014, by threatening an investment strike in response to the Labour Party's proposal for a price freeze. Caroline Flint, the shadow energy secretary, said: "It is not acceptable for companies to threaten that the lights will go out because they don't want greater transparency, competition and accountability". Centrica, in conjunction with Cuadrilla Resources, funded the North West Energy Task Force which on 8 January 2015 organised an Open Letter to Lancashire County Council in support of fracking. This letter was signed by Jane Watson, sister of Robert Altham, the judge who sentenced three anti-fracking protesters to jail in September 2018. References External links Public utilities established in 1997 Utilities of the United Kingdom Natural gas companies of the United Kingdom Electric power companies of the United Kingdom Companies listed on the London Stock Exchange Companies based in Berkshire British Royal Warrant holders Windsor, Berkshire British companies established in 1997