Does one have to be a member to sleep in London youth hostels?
People who are not members of any hostelling association can still stay at youth hostels, although in the busy seasons, when rooms are scarcer, priority will be given to members. Rates are slightly cheaper for members. Membership brings with it other benefits, including entitlement to discounts on selected local services and attractions. If you’re not sure how much hostelling you’ll be doing, and whether the up front membership fee will be worth it, you can opt to join gradually by collecting stamps on a membership card. Each time you stay at a hostel and pay the extra rate you are entitled to a stamp. Collect enough stamps and you become a member.