You don’t mention how many people in the house, but certainly your usage of 6-9kWh per day of electricity is not excessive. It may be possible to shave a bit off though. We recently had two short breaks away, so I was able to see what the house was using when it was empty. The first trip it was 3.4kWh on the empty day. The second trip, I turned off at the plug everything I could reach - TV and peripherals, computers, Sonos units, even the microwave. Average usage was under 2.5kWh per day. So there’s up to 1kWh per day that could be saved by not leaving things on standby.
Obviously turning things on and off at the plug all the time can be a right faff, so I plan on getting a smart plug when the one comes out which integrates with my solar monitoring system. I’ll initially move it round to see how much the various devices are using in standby. Then I will set a timer for it only to be on during sensible hours, starting with the devices which use the most, maybe adding further ones if I think it’s worthwhile.
On gas - do you have a combi boiler? If so, check that the hot water is set to “Eco” rather than “Comfort” mode - might be called something different. Basically, Comfort mode keeps a little bit of water warm all the time, so that you get hot water quicker when you turn the tap on. I switched that off, and we were instantly using 2kWh less gas per day, which is about 14p, or £1 a week. Apparently it saves more in the winter when the water is colder to start with.
Also for the winter, reduce the flow temperature on your boiler, they are mostly set too high and can’t work in condensing mode. We saved about 5% of our gas usage last winter.