Ohhhhhhh, is that the information I'm missing? So you have to know both the building you vote in and the specific table you need to go to?

In the UK, you just turn up at the the right building and there are signs to guide you from there. You don't need to know in advance what table to vote from. (Unless it's changed recently - I've had a postal vote the last 2 elections. Can anyone from the UK confirm?)

That would make the question "Where do I vote?" much harder to answer. In the UK, for 99% of the population it's a simple "My postcode -> building address" lookup table that contains no voter personal information at all. But if Catalan has to have "??? -> building address and which table" that is much harder.

Thank you, that sounds like the answer I was missing then.

But Q: If you only knew the building you had to vote from, and not which table, could you still turn up at the building and be able to vote somehow? Or would they really turn you away?