So we had our first gas bill (we pay monthly) through. For a five week period we used £175 of gas 🤬 (incl standing charge). It's a large 4 bed though to be fair.
That's keeping a house at 19.5c at periods only with it timed for 1 hour on waking, 4 hours at night but not actually 'on' that whole time. It's a fairly efficient house and during day thermostat (hive) is never dropping below 17.8c yet so it's not like it's needing to heat a huge margin. Quite scary really. Our showers are run from boiler and we don't have any baths. Water heated a few hours a day.