Sounds like your getting ready for a Engish summer.I read all the answers to this one and thought, this all seems like lightweight kit for the (Arctic), I was thinking super grade sleeping bag, snow chains, etc. I must pay more attention when reading!.
Don't forget a bag of sucking sweets, head mounted torch, good penknife, small first aid kit or plasters, Biro, some sort of small computer and dongle to keep in touch. phone charger and any connectors\adapters. a separate list of contact numbers.