1. Lightweight 45l rucksack. Save 500g.
2. Lightweight Sleeping Bag (Vango Venom good price). Save 500g - 1kg
3. Half size inflatable mat. (highlander do cheap ones). Save 200g - 500g
4. Spork instead of knife, fork, and spoon. Save 100g
5. Lightweight Stove (eg. MSR Pocket Rocket). Save 100g
6. Lightweight cooking pots. (millets do good set for about £20). Save 300g-1kg
7. Headtorch instead of big D cell maglite. Save 300g
8. Lightweight Tarp instead of tent. Save 2-4kg
9. Keep food in Ziplock bags not containers and tins. Save 100g
10. Lightweight clothes. (goretex and fleece instead of fur lined duffles) Save 1kg
The weights are guesstimates really, but 10kg can make a lot of difference.
AJ