By Levi Winchester BT will no longer distribute free copies of its iconic phone book from April – ending the service after more than 140 years. The first BT phone book was delivered in 1880, with 18 million copies printed every year – but this month will see the last editions hit doormats up and down the country. BT said less households are relying on its physical phone book, and instead are going online to find the same information. Paper-based advertising has also declined, the telecoms giant said. For customers who would still like a physical copy of the phone book, they will have to pay £1…