Policing and Crime Bill

When the officer decides to seize something and says, "I am taking this", what does he do? Does he write down on a document that he has taken something and give that document to the person from whom he has taken it? How does it work in practice? One is a little worried because, while I well understand that this could be a useful power, it could also be an oppressive power. Whatever the hurry, a practical way of indicating the formality of the proceedings is probably necessary. Could the Minister say a word about that?