Continue along A404 until you get to Stony Lane, (if you have time/ haven't don't it already, why not try and find "Welcome to Little Chalfont" GC5RXTG) turn right and walk up Stony Lane. When you get close to GZ, why not take a seat and relax a little, after all you've done a lot of walking already!
As good practice, please bring a Pen/ Pencil, a pair of Tweezers, Carrier/ Rubbish Bags (CITO), a pair of Rubber/ Latex Free Gloves maybe, and your stealthy mode!
Watch out for muggles as they can be abundant around here I hope you enjoy these and I hope they don’t stress you too much.
Good Luck