Do definitely have a lawyer present, but whether or not to talk to the police varies a lot per country. Personally, I think that not talking to the police being such vital advice in the US, is a strong condemnation of how the American system works. People should be able to trust the police, and the police and prosecutors should be working to do justice, not merely to lock up as many people as possible. Every innocent person behind bars is a failure of the system.
Don't get me wrong. It's a great thing when a country overcomes it and manages to create a fair, even-handed justice system.
But human nature is to want to see something done about it when crimes happen. That's why before formal justice systems existed (and still today in certain undeveloped areas), a mob would form and just take out -- as in kill -- the suspect on the spot. Without really being sure that they were guilty.
The idea of deferring punishment, recognizing and protecting the rights of the accused, and conducting a fair, orderly trial is a wonderful thing, but it's not the default. It's really more like an achievement in human evolution.
Prosecutors play fast and loose to win the game, justice be damned.
But rewarding police and prosecutors for the number of convictions is like rewarding programmers for the number of lines of code. It rewards bad code and unjust convictions.
Maybe there should be a justice-equivalent of code review for police and prosecutors.
It isn't clear what sort of reforms are needed, but grand juries are the only democratic institution in our republic.
If it was possible to "sticky" a comment here, this would be the stickiestable comment.
One of the key takeaways was that the Police will start building a case against you from the very first moment they start interviewing you. So the advice to not talk to the police is very relevant if you believe there is a chance to be incriminated.
The book also gives an introduction to the Inquisitorial law system - used in most of the EU - where the judge plays an active role in the investigation and finding the 'truth'; in contrast to the Adversarial system of law - used in the UK and US - where each side competes with facts and the judge is a referee; and how all of this affects the judicial process.
http://www.legislation.gov.uk/ukpga/1994/33/section/34
So the advice holds. Don't say anything unless your solicitor tells you to do so.
Beware this advice can vary from country to country. In England and Wales for example if you don't say something to the police that you later rely on for your defense that can be used against you e.g. they ask 'why was your boot full of weapons and where were you heading?' you stay silent then later state in court 'it was my brother's car, he asked me to drive it to a friend's house and pick him up, I didn't think to check in the boot' they could perhaps infer you'd taken some time to concoct a false story which is why you didn't answer the question initially however the rules are complex: https://en.wikipedia.org/wiki/Right_to_silence_in_England_an.... You do have the right for a duty solicitor to attend an interview who can advise you on prudent things to say and where you should stay silent.
EDIT: Initially said this applied to the whole UK, actually only England and Wales (from the linked Wikipedia page) uncertain about Scotland & Northern Ireland.