Full list of 25 power companies British Gas, OVO, E.on, Octopus PS150 customer boost - British Gas, EON, EDF, OVO and Octopus customers must take meter readings at midnight - Customers of British Gas, Octopus, Ovo and EDF given PS75 overcharge warning - Plans emerge to 'lower' energy bills charges including for British Gas, E.ON, Octopus - Brits with British Gas, Octopus and more could be entitled to free boiler upgrade - British Gas, EON and Octopus customers told 'unplug' five appliances for PS200 - British Gas, EDF, EON and Octopus customers on state pension can to cut bill to PS0 - British Gas, EDF, EON and Octopus hand PS2,000 to state pensioners after winter fuel cut - British Gas, EOn, EDF and Octopus customers given date for PS300 GB Energy bill cut - British Gas, EOn, EDF, OVO and Octopus customers with smart meters told 'backdate' reading