All joking aside this is actually a decent thread because it’s going to be a long hard winter for lots of people especially if you have a young family and it ain’t going to be easy for many people
These 7 steps listed below have already been mentioned but are pretty easy to do and just common sense really but will save 10/15% energy
Shower for no more than 2-3 minutes
Turn thermostat down a few degrees
Use air fryer and slow cooker (both excellent gadgets by the way) instead of oven
Only use tumble dryer when absolutely necessary
Don’t leave lights on for no reason
Turn everything off at mains and don’t leave things on standby
Turn the radiators down low in any room you don’t use often
Everyone can do all these with just a little bit of thought
And as Kiffa said meal planning and maybe cutting back on expensive meat and adding more veg to meals will save you a packet

Also if you have a menapousal wife like me that helps keep your bed bastard boiling all the time!!!