Putting it in AIBU for traffic, it has saved me some money off my gas bill so far so I hope it can help others.
You may already know this, in which case ignore and move on.
You can use less gas by checking your flow settings on your boiler. Mine was set to 80 degrees by default which meant I was spending huge amounts on heating up water that then has to be cooled down with cold water. In the case of heating it just takes a little longer to warm up.
This advice comes from Octopus: for combi boiler set your flow temperature to 50 degrees for water and 55 heating.
There is advice for boilers with hot water cylinders attached.
I'm taking part in the Octopus Winter Workout and according yo them I have saved £95 since the beginning of December and this is the only substantial change I have made!
I assumed everyone knew about this except me but my sister hadn't heard of it and she's very hot on money saving so I thought there must be others out there.
Seems worth a try since we're all crippled with ridiculous energy bills at the moment.