You are of course right. In one of those countries the procedure to claim back is actually very very simple. But you will be hit by language, so you need to speak it or have a best friend that does. They even transfer the money to your bank account anywhere in the world - well perhaps not everywhere 
. No cheques Ma’am.
p.s. of course if your dividends exceed £2000 you will still have to pay UK income tax … so you will need to consider whether it is worth claiming back that money and instead just getting appropriate relief so that there is no double taxation going on.