Octopus and its customers ask Treasury to back zonal electricity pricing

Greg Jackson, of Octopus Energy, says the change would lower energy bills for all homes and businesses. Photograph: Hollie Adams/Reuters

Octopus Energy has rallied thousands of its small business customers to back an overhaul of Great Britain’s electricity market.

The largest energy supplier in Britain and more than 3,700 of its customers wrote to the Treasury last week calling for an immediate introduction of postcode electricity pricing.