This isn’t my speciality, but seems reasonable!If we're accepting Lundy as the name of the settlement as well as the island (and I'm happy to)…
Blimey, I’d never heard of Bratton before, but its Wikipedia entry is fascinating. The one I will go for is that the Westbury white horse is actually carved in the hill above Bratton. Osmington near Weymouth also has a white horse.At 330 feet above sea level, the church at Bratton, Wilts is the same elevation.