So just had a walk up there with herself as I thought it would help her recovery from her hip replacement! We were not overly concerned with the authorized access only sign at the start and made reasonable progress to the big gate. This looked problematic for her but then I noticed a hole had been cut in the fence to the left looking uphill which myself and the dog nipped through and she was able to follow as well without too much problem.
All went well till we arrived back down at this fence but she was unable to go back through the hole in this direction and could not climb the gate.
After half an hour I decided I better check if I could do anything about the chain with its many padlocks and discovered that it was not actually chained up properly at all!
After a few un-lady-like sweary words
aimed at the gate (I think!) she got through and all ended well. Anyway her fitness and recovery is going well and its a wee hill we might otherwise not have gone near.