Tent – share the tent, poles and pegs between us: http://www.terra-nova.co.uk/tents-and-spares/all-tents/superlite-voyager-tent/ For 2015 we updated our tent and saved ourselves a whopping whole kilo in weight! We went for an American company Z-Pack. http://www.zpacks.com/shelter/duplex.shtml. We used one set of walking poles and the tent poles and it comes with pegs. Super light. Super roomy.
Sleeping bag: http://www.design-your-own-sleeping-bag.com/
Mattress is a “thermorest”: http://cascadedesigns.com/en/therm-a-rest/mattresses/fast-and-light/prolite-2012/product . Another update for 2015, we switched to the therm-a-rest neo air, again much lighter, packs down smaller, gives better ground insulation and was much, much more comfortable – a no brainer … http://www.cotswoldoutdoor.com/therm-a-rest-neoair-xlite-sleeping-mat-regular-d2322185?id_colour=151 (you need quite a lot of puff for these!)
Sleeping bag liner – for if it’s too hot for a sleeping bag or an you need an extra warmth layer: http://www.blacks.co.uk/activities/114725-life-venture-silk-liner-rectangle.html (we did not take the liner in 2015)
Pillow – just using one of our stuff sacks with stuff stuffed in it!
Bottles and tubs- for all important lotions and potions: http://www.cotswoldoutdoor.com/nalgene-container-125ml-95110048?id_colour=180