It's just good sense, little trouble and makes it easier if someone complains. I also report to the police 48 hours in advance every car journey I intend to take, every time I intend to carry any money, every time I plan to go to the pub, go shopping, go for a run, pretty much every legitimate activity really..
People say the police are overworked and buried in admin. I can't imagine why. They love it when I call and it is such a good use of taxpayers' money to keep them busy with masses of unnecessary communications.