Great question — answering as the UphillTech team:
I would begin thinking about the overnight accommodation. You can do this fairly cheaply in the UK if you stay in a hostel, walkers lodge or a bunk barn. Many of them provide bedding and often food as well. Thus removing the need to take a tent or sleeping bag. Some places even provide tents for a charge! If accommodation cannot be found then I would take a larger tent if possible and share the load of other stuff between the group. All the new person would need is to borrow a backpack. Then as long as you can put up sleeping in the same tent with them it will reduce the upfront cost! Assuming you have the larger tent! I would choose a well known and relatively easy route as well. Don't get...
Full answer by Aim Kai: https://outdoors.stackexchange.com/a/838 (CC BY-SA 3.0).
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