Overnight electricity used 29kWh @ 8.863p/kWh = £2.57027

Storage Heat 1 2.0kW
Storage Heater 2 3.0kW
Water Heater Top 3.0kW Water Temp 50C
Water Heater Bottom 3.0kW Only for Boost
Large Freezer 1.2kW Averaged over 24hrs
Large Fridge 0.8kW Averaged over 24hrs