Quarterly and annual gas and electricity prices for the non-domestic sector, including and excluding the Climate Change Levy (CCL), split into consumption size bands.
Source
https://www.gov.uk/government/statistical-data-sets/gas-and-electricity-prices-in-the-non-domestic-sectorDocument officiel chez le régulateur. Citez toujours cette URL — et non la page de détail Vantage — dans les preuves de conformité.