UKenergy  
   Domestic gas and electricity supply cost comparison.
   http://www.ukenergy.co.uk/

uSwitch.com  
   Provides comparisons of gas and electricity suppliers, digital TV providers, home telephone providers, broadband internet and mobile phone packages.
   http://www.uswitch.com/

Churners.org.uk  
   Informational site offering news, statistics, and listings of price comparison sites.
   http://www.churners.org.uk

EnergyOn.co.uk  
   Provider of gas and electricity price comparisons, including details of providers' vouchers and special offers.
   http://www.energyon.co.uk

Saveonyourbills Ltd  
   Offers comparisons on telephone, electricity and gas for consumers and business customers.
   http://www.saveonyourbills.co.uk/

Buy.co.uk  
   Savings calculators for comparing prices for dual-fuel, electricity, gas, digital TV, telephones and water metering.
   http://www.buy.co.uk/

The Energy Shop  
   Comparisons of gas, electricity and dual fuel utility providers.
   http://www.theenergyshop.com/

Energylinx  
   Home electricity and gas price comparison service.
   http://www.energylinx.co.uk/

UK Power Ltd  
   Information on electricity, gas and alternative power suppliers in the UK.
   http://www.ukpower.co.uk/

MoneyExpert Gas and Electricity  
   Dual fuel, gas and electricity comparison service.
   http://www.moneyexpert.com/energy

SwitchandGive  
   Gas and electricity comparison service that donates a portion of commission to charity.
   http://www.switchandgive.com/