Always interesting to see what others are taking out on their camps. Personally, I think there's considerable scope to reduce quite a bit of weight by ditching or switching out a few of those items listed. And then over time, you'll learn what works for you.
Despite some comments above stating otherwise, the Kelly Kettle at 470g really isn't that heavy at all. But I think you'd prefer the versatility and reduced bulk of a basic cook pot (ideally one that nests with a water bottle - A crusader cup and bottle combo or TBS 750ml pot and nalgene bottle for example). Add a trangia burner with trivet system and you'll be sorted.
Ditch the flasks in favour of a basic plastic bottle to reduce the bulk/weight of the flasks.
The OEX Salamander bivi might serve you well in the winter, but I'd swap it out for a basic British army goretex bivi. That'll save you approx 300-400 grams and you'll be unlikely to experience any condensation woes.
I'd ditch the wool roll mat and also the wool blanket from your list, you've already got sleeping kit covered so these seem like luxuries. Ditching one or both of these will save quite a lot of bulk and weight from your pack. For warm clothing go for a fleece, wool jumper and/or smock.
The FECSA sleep system is very good indeed, but in the middle of summer you almost certainly don't need to carry both sleeping bags. I'd go for the lightweight sleeping bag in the summer, but much will depend on how warm/cold you sleep. The medium bag on it's own should see you through much of the year in the UK though.
Ditch the small rucksack and sewing kit - not needed for an overnighter in the circumstances that you presented.
Moving on to the things that you'd contemplated adding to your kit: The multi-purpose cook pot - definitely worth doing in place of the kelly kettle. But don't bother with the axe as you can get by easily without it, maybe consider getting a Morakniv as an alternative. It'll be cheaper, lighter and much safer.
Keep at it though and enjoy your time outdoors.
Despite some comments above stating otherwise, the Kelly Kettle at 470g really isn't that heavy at all. But I think you'd prefer the versatility and reduced bulk of a basic cook pot (ideally one that nests with a water bottle - A crusader cup and bottle combo or TBS 750ml pot and nalgene bottle for example). Add a trangia burner with trivet system and you'll be sorted.
Ditch the flasks in favour of a basic plastic bottle to reduce the bulk/weight of the flasks.
The OEX Salamander bivi might serve you well in the winter, but I'd swap it out for a basic British army goretex bivi. That'll save you approx 300-400 grams and you'll be unlikely to experience any condensation woes.
I'd ditch the wool roll mat and also the wool blanket from your list, you've already got sleeping kit covered so these seem like luxuries. Ditching one or both of these will save quite a lot of bulk and weight from your pack. For warm clothing go for a fleece, wool jumper and/or smock.
The FECSA sleep system is very good indeed, but in the middle of summer you almost certainly don't need to carry both sleeping bags. I'd go for the lightweight sleeping bag in the summer, but much will depend on how warm/cold you sleep. The medium bag on it's own should see you through much of the year in the UK though.
Ditch the small rucksack and sewing kit - not needed for an overnighter in the circumstances that you presented.
Moving on to the things that you'd contemplated adding to your kit: The multi-purpose cook pot - definitely worth doing in place of the kelly kettle. But don't bother with the axe as you can get by easily without it, maybe consider getting a Morakniv as an alternative. It'll be cheaper, lighter and much safer.
Keep at it though and enjoy your time outdoors.