Phew, received my 18th Nov powerup results.
Seems that one was more area specific and was done differently to the rest.
Aug to end of Nov is £93.17 of elec refunded.
I have substituted elec for gas in order to maximise that, heating water via immersion heater and some fan heater use instead of GFCH.
But also moved timing of battery charge, doing washing/tumbling etc