I don't even have an iron, hang t-shirts etc up as soon as they come out the wash. Nobody has ever noticed! 15 minute cycle for anything that doesn't really need more than that.
Only use tumble dryer for towels otherwise they go all stiff. I hang bed linen over the dining chairs and use a clothes horse for everything else.
Baths - forget it. Shower all the way.
This is something I only do because I had them left over from a party... but I saved loads of washing up by using paper plates for things like sandwiches and toast. £1 for 100 in some places!
Try to wear clothes that can all be washed together, darks etc. Wear two or three times if possible.
Cook in bulk, big things like chilli bolognaise etc and just heat up when needed.
Don't use lights when not needed.
Only heat essential rooms like bedrooms and lounge, turn off radiator in hallway, bathroom and kitchen.
Battery operated radios last for ages - use these when nobody really wants the telly.
Fuck the dishwasher.
Charge phone in the car whilst driving.
Cut down on tea and coffee or boil enough water for a big flask.
Stock up on hot water bottles, throws and put curtains up behind doors for insulation.
As for saving money cancel the TV license. You can still watch ITV, C4 and C5 just not live. Go with Netflix OR Disney Plus.
I have no children and live alone so I say this without credit really... but most of my friends admit their kids will have their TV on in the background, whilst the Xbox is also on... whilst they are texting on their charging phones. Try to get them to understand although I imagine it's probably easier said than done!