More than / over ??

In the United States, we usually use "more than" in countable numerical expressions meaning "in excess of" or "over." In England, there is no such distinction. For instance, in the U.S., some editors would insist on "more than 40,000 traffic deaths in one year," whereas in the UK, "over 40,000 traffic deaths" would be acceptable. Even in the U.S., however, you will commonly hear "over" in numerical expressions of age, time, or height: "His sister is over forty; she's over six feet tall. We've been waiting well over two hours for her."