Well, every little helps, as they say. Going through the whole hose and fitting LED's certainly reduced our bills. When a standard filament bulbs draws around 7 times that of a LED equivelent it has to make a difference, especially in Winter with short daylight hours. We also have an electric cooker/grill which gets used 2, sometimes 3 times a week so that will certainly put a big hit on consumption. Most modern appliances that have a "standby" feature use switch mode power supplies so really do use very little when in said mode. We also updated our main freezer with a model that has a much higher efficiency rating. As said, all the little savings add up, the problem being they're dwarfed by the massive tariff increases in the last few months, increases almost unknown in living memory and it's just the start apparently.