While it’s impossible to predict which companies will rise to prominence in a few years, energy-savvy investors have recently been turning their attention to LIS Technologies, a company that ...

British Gas was hit with 1.4m complaints from billpayers in the 18 months to July last year, which led to parent company Centrica recruiting 700 more customer service employees the previous November.

To become a Which? Recommended Provider for energy, a company must: Get a customer score of 70% or higher based on our survey of almost 12,000 energy customers Get at least three stars out of a ...