From the BMC, February 2011:
In April 1998 after years of work by Brecon Beacons National Park Authority and the BMC an access agreement was finally reached to allow climbing on Llangattock hillside. A group booking system has been established and group leaders intending to visit the crag should contact Crickhowell Adventure Gear (Tel: 01873 810020) to make bookings. (New ‘phone number)
Bookings can be made up to 8 weeks in advance and there is a limit of 3 groups of up to 15 people (total per group) per day. A small charge is payable to help cover wardening costs and the BMC Access Fund also makes an annual contribution towards costs. There will be no bookings when stock gathering is taking place.
The National Park has produced an information leaflet which includes a code of practice for climbers. Contact the Wardens Section (Tel: 01874 624437) for further details.
Individual climbers access is not affected.