Hi Steve
Ok here goes !
Mountain Gore-Tex Bivvy 1368g, inc' lightweight pegs and hoops, 230x80x50cm (35x15x13cm packed) This is lighter than one you linked to, space ( internal ) is not really an issue. I prefer the low profile approach ! If needed, I could also ditch it and use the 3x3 DD tarp.
Sleep bag 4 season ( extreme rating, -10 ) . Could save weight with a two season in good weather but , its Scotland remember !
Esbit 5 piece Alcohol cook set 417g
250ml of meths ( could half as only for evening and breky )
Vango UL 3/4 mat 460g
Food , VERY basic, oats or such for evening and breky, a few teabags . coffee sachets
Water, a real killer ! 2 ltrs, so thats what , about 2000g ? ( not including bladder, which is minimal )
Simple weight savings:
Swap the hooped bivvi for a bag and tarp. A Alpkit Hunka + Alpkit Riga 3.5, come in at 376g and 270g respectively, giving you a total weight of 646g. or about half what you have now. Total outlay - 65 quid. Switching to the DD tarp wont save you much, they weigh a ton (well maybe nearer 790g). If you're feeling brave, leave the tarp out and just take the bivvi bag, so your accommodation is 376g total.
Next up: esbit set, Evernew Apalachian set, gives you a single 500ml pot, a meths burner, solid fuel tablet burner, and it'll burn twigs, total weight: 161g. Need a second pot? add the 400ml mug for an extra 50g. Still want a 3rd pot? add the 600ml pan for 95g...
Water is always a big weight burden, you could perhaps have taken a 1L bladder, and a sawyer mini filter (available in a group buy for a very good price currently). This would allow you to shave a good 700g off your pack weight straight off.
All told, assuming single pot setup, we end up around 2kg of savings?
Camera gear is body and two lenses, can't really change that, though could take a mini tripod ( or Gorilla grip ) my Redsnapper is a hefty 2268g
Definite saving could be made on the webbing as mentioned by Julia I reckon.
Today I took delivery of an Osprey Tempest 30 backpack. They make a mens version the Talon 33. Should have enough space for everything you want there, and for about 800g. Failing that, maybe the Exped lightning 45, at 1000g ?
That tripod is 1kg heavier than my Velbon Ultra Luxi F, and about 1.3kg heavier than a Slik Sprint Pro II. Just to give you an idea of the weight saving potential there.
What camera body do you shoot? Not going to suggest any change, just curious as a camera geek.
A VERY basic change of clothes, boxers, socks, base layer, lightweight fleece, and waterproof jacket ( ultra light and breathable , not GT tho' )
This kit is really only intended as a "mobile" kit for striking out from a base camp to hard to get to areas ( or Munros ! ). Main idea is getting images of Sunset/Sunrise then head back to camp.
The above should give you some food for thought, a few basic changes of varying levels of expense and weight saving.
Do let us know how you get on.
Julia