There are certain important phone numbers that make for proper business activation plans in UK that make for rather big savings for you. These are big dividends that one receives from the choice of proper business number activation. These numbers are 0800 numbers, 0845 numbers and 0844 numbers. The top most important companies in UK have these numbers as their active settlement numbers. Such companies are American Airlines UK, Barclays UK, BT UK, Bank of Scotland Credit Cards UK, Bank of Scotland UK, Apple UK, Callaway Golf UK, Canon UK, etc.