@Marvin
I think I have just about done all the reduction measures I can (except baths).
I intend to add a bit more insulation here and there, but it will only make a marginal difference.
An EV would make the biggest difference, but at the moment it would not be practical (or affordable) for me.
I could get a lodger again, which would pay for an EV, but I like living in my own.