I'll try! I don't keep a list (just keep everything together), and I rarely weigh anything, but here goes:
I think in total this comes to between 7 and 8 kilos, before adding water.
35L rucksack.
Thermarest NeoAir mat
Tarp + Bivvy bag, or one man tent (Coleman Viper) - either option weighs about the same
Down sleeping bag
Modified Bush Cooker (if I know fuel will be available), or Primus gas stove and gas, in a Primus pot with lid
Plastic spork
Cup
Leatherman multi-tool
Fire steel
Two Leki walking poles
iPood + paper
iPhone
Toothbrush and toothpaste
Travel Tap water bottle with filter, plus 1L folding water bottle
Book
Black Diamond Spot headlight + spare batteries
Compass, map and whistle
Travel towel
Camera
Waterproof shell jacket and overtrousers, plus gaiters if I'm likely to need them.
Spare socks
Gloves (3 pairs in Winter)
Hat (type depends on season)
Clothes as appropriate
For food, I have been using dried pre-packed meals like the Wayfarer ones, but they're extremely expensive, so I've bought a vacuum food sealer and will be preparing my own.
If I have the Bush Cooker with me I take a potato or two too, because (modified) it's great for baking them!
I also take coffee with dried milk, and a couple of Cup-a-Soups.
Trail food is a mixture of pita bread, meat slices, cheese, cereal bars, chocolate bars, and nuts normally.
For water I now use my filter bottle - full with 750ml it normally lasts about 2 to 3 hours, and I top it up at every opportunity. If I'm not sure I'll find sources of water I carry nearly 3 litres in a platypus bladder, but try to avoid that if I can.
For cooking I aim to find a camp spot, then go and look for water - I fill my 1 litre folding bottle from the filter bottle, then top up the filter bottle so I have 1.75 litres. If I'm close enough to the water then I might fill the pan directly from the stream too.
On Dartmoor you can often find underground streams.
I feel I must have forgotten something there, but maybe not!
Mark