of energy tariffs by suppliers, Ofgem followed up its Energy Supply Probe with a Retail Market Review, which it launched in November 2010. The review found that complexity in the gas and electricity markets was a barrier to consumers and competition. It found that 75% of consumers were on their supplier's standard "evergreen" tariffs (also called "Standard Variable Tariffs" or SVTs), the more expensive default option than fixed-term tariffs that would save them money over a set period of time. It also found that energy prices tended to rise in response to wholesale cost increases more quickly than they fell with decreases, and that competition was weakened by significant barriers that were preventing new suppliers from entering the market. They proposed a series of measures including changing some license conditions of suppliers, to make pricing more transparent and reduce barriers for new suppliers to compete for customers, as well as working to improve consumer trust in price comparison websites. The Coalition Government elected in 2010 published their own white paper on energy in 2011, which focused on decarbonisation and security of supply, but which backed Ofgem's findings and proposed reforms. Advocates for further reform included the consumer group Which? and Consumer Focus (later Consumer Futures), the statutory body formerly known as Energywatch. The government later announced its intention to force energy suppliers to offer their cheapest tariffs to consumers, and subsequently made amendments in the Energy Act 2013 to give Ofgem greater powers. In 2014, the government amended the legislative Fuel Poverty Strategy for England to target improving as many fuel poor homes as is reasonably practicable to a minimum energy efficiency rating of Band C, by the end of 2030. On 24 September 2013, the Leader of the Labour Party and former Secretary of State for Energy, Ed Miliband, announced plans to freeze energy bills for 20 months if Labour won the next general election, saying the move would save average households £120 and businesses £1,800. The announcement was criticised by energy suppliers, and labelled "Marxist" and potentially "catastrophic" by the government, but was supported by around two-thirds of the British public. By the end of the year, the government acknowledged that there was largescale dissatisfaction among the British public about the perception that the large energy suppliers were overcharging their customers. After working with the Office of Fair Trading and the newly established Competition and Markets Authority (CMA),