Election data criteria

Just out of curiosity, how can we know that there is actually a polling station for 10 people? I tried to look for the list of all polling stations in the UK and failed to find one. Can you point me for such a list? In a country when one can vote also by post or by proxy, it seems odd to me that there will be a polling station for a congregation of 9 people in total (it also costs a lot of money to set up so many of them).

No doubt though, that privacy and anonymous elections are important, but poll stations usually consist more that 10 people and a station… One solution can be to have poll station for the amount of X people, as it is in many other countries in the world.

Again, out of curiosity - why when it comes to granular elections data I hear more UK people opposing to it than lets say, granular spending data? Does British people have more trust in the elections system than the rest of the world? (If they do, good for them!)