One area I could save a lot of weight is probably water, I sweat quite a bit so drink a lot as a result. Rarely seem to be far away from a source of water in the UK so think it could be worth investing into some kind of a water filter, that way could just carry my 1 litre metal bottle with me and refill as needed.
Second area to save a lot of space would be the cooking system, at the moment just have a cheap Chinese set from Amazon. Little stove thing is working just fine and the aluminium pots are ok, but awkward size that won't fit most of the regular sized gas canisters. Once I have to stack the gas canister on top then it's taking up a lot of space in the backpack so I'll start looking for a set of pots that allow a gas canister and stove to fit inside.
Third area I wasn't too stoked about was actually the backpack, Berghaus Trailhead 2.0 65L. Nothing wrong with it per se, but I found it lacking in space management side of things and just an overkill for a single night. There's only one pocket at the top that zips up, then inside it's essentially one big space with another one that can be separated at the bottom (with separate zip on the bottom), but that's about it so everything is just kinda in that one space. I'm sure I can get some dry sacks to separate and manage things better in the future.
I have had
this backpack now that's over 8 years old and been used as a day pack with me everywhere. Lots of compartments and even more inside them so it's now second nature to me to know where everything is when I pack it, but I would struggle to fit a sleeping bag in there. Think if I try to fit that on the outside along with the tent, I could use this as a single camping night easily, especially if I address the two points above.
It is still in good condition, but I wanted a black version for a while and see that similar design can be bought in bigger capacity (mine is 36 litre) so maybe get one in the near future.