Hi, Philip, I too have an ENY:1 the figures you give do resemble the real world, sadly the WLTP rubbish is way, way off. It should be stopped as it gives one a false impression of achievable range, a range one could never reach. You can however gain a little mileage by pre-conditioning the vehicle prior to a journey, especially by charging fully and leaving the charger on and connected, obviously, this uses mains power to pre-heat the battery and cabin, this I have found gives about 10-15% extra miles when in ECO.
Sadly, the ombudsman will do nothing until we get a more suitable way of range indication. Winter doesn't last too long anyway so hang in there. What's not fit for purpose is the WLTP not the car. Honda have to comply with this ridiculous way of range estimation as all manufacturers do.