I only realised the horrendous extent to which your consumer privacy is disregarded after we started buying baby-related merchandise. Our mailbox is drowning in baby junk mail even though I don't remember being asked by anyone if we wanted it. We are targets for a business strategy, lines in a database file.
We have a strong inkling that Amazon and Mothercare have sold our details. Possibly also Mamas and Papas. Both Mothercare and Mamas and Papas ask for your house number and postcode every time you buy something.