Found a bit of an odd thing on voda's map..
Go to the coverage checker and type in PA78 6TE
You'll see it's a remote Scottish island, yet according to vodafone, there's a 4G mast on it? It says no 2G, but strong 3G and 4G, and from the map it's clear that it's showing there's a mast on the island, not that it's picking it up from elsewhere (not that there's anywhere close that is 4G)
Sitefinder shows no masts on the island except an airwave one. Complete mistake on the map then? There couldn't be absolutely no 2G, yet 3G/ 4G could there? And out there in the middle of nowhere? :S It's quite odd...