In reply to lookingforjugs:
It seems to be a consistent thing amongst ukc users that no one understands the duty of care that walls hold towards their users. No it's not a free bloody country, and you can't just crack your own whenever and wherever you want.
If you pay entry to a wall, you are using their facilities, and should follow their rules. Regardless of how silly they may seem to be.
Anyway, back to the duty of care thing. You will have signed to say you accept the bmc/abc participation statement, and you climb at your own risk, but it is still the walls duty to ensure safety is kept to a the highest standard possible.
Under 18s are not adults, and by law cannot sign for themselves or be responsible for themselves. If a wall just allowed under 18s to crack their own in the way they will for adults, and something went wrong, there would be hell to pay.
Having said that, as someone has quoted, the default setting is 'under 18s must be supervised unless assessed. '
IME, a wall I know will have a detailed and thorough assessment of an under 18, but above 14, who claims to be competent. If found competent, the parent may agree to allow their child to climb unsupervised. Which is essentially what was quoted earlier.
In response to the op, don't be offended, and you should expect this as standard. Press the staff for an assessment, but given that they are a new start, they may not be totally organised as yet.