What Kit To Carry In The Mountains?

Kit to carry to be fully self sufficient/fully safe in the Irish and UK mountains.

Full Breakdown:
Backpack (not too big/not too small)
Waterproof Backpack Liner (heavy duty bin bag will do)
Waterproof Coat & Pants (always carry)
Walking Pole (can be used as crutch/three way splint/streams)
First Aid Kit (within more waterproof layers)
Mobile Phone (fully charged)
Water (two litres at least)
Hot Drink (hot/sweet/sugary drink best, especially for a casualty)
Survival Bag/Bivvy Bag (get a double size bag)
Foil Blanket x 2 (to be wrapped around body under outer layers)
Storm Shelter/Kissu (have one the correct size for your party)
Laminated Map + Spare Paper/Photocopy Map
Silva Type 4 Compass + Spare More Basic Compass
Head Torch + Spare Batteries (reverse batteries in head torch to prevent wastage)
Blister Compeed Plasters
Whistle (separate from any backpack built in whistle)
Hat + Gloves + Mittens x Main Set
Spare Hats x 2
Spare Gloves x 2
Spare Fleece x 3 (for pure emergency)
Spare Pants x 1 (for pure emergency)
Sun Cream

Nice To Have But Not Essential:
GPS (reverse batteries to prevent wastage)
SAM Splint (for stabilising a fracture)