Did you go over to Golden Bay? The road over the top is just a blast on a bike! Not for people of a nervous disposotion though. Also one of my faves was the coast road from Nelson down to Kiakora, and the road up to Hamner Springs oh I could go on there are so many great roads in NZ
Golden Bay is the North West tip of the South Island, not many people go there as it’s one road in and out and not really in loop. Most people go from Greymouth on the west coast to Nelson on the north coast and cut the corner off not knowing what they are missing. If you go again you must make an effort, it’s an old hippy hang out and is very chilled and relaxed. Lots of cows mountains and beaches, just beautiful.
Beautiful pictures there mate, not sure if the english roads near london can really match that…but some of the twists and turns will give you a good run for your money.