I landed there a couple of years back, being convenient for Berwick. It is about 1000 m of broken tarmac about 48m wide (i.e. stardard regional airport runway width), and was at that time in good condition (I walked it all before departing). Landing fee was a cheque, sent by post. Not easy to find as there is really nothing there but the runway, so get the navigation right and perhaps check out an OS map for features to help.