We have high use of electricity for everything. We moved from Eon 6 years ago to Octopus Energy, who provide E10 using their E7 rates.
In East Midlands the current charges [including VAT] are 20.06/day, 16.58/kWh for peak use & 10.32/kWh for off peak.
They have an incentive of £100 to share with friends who join via a link.
Hope this information is useful, Mike