LONDON—Oil prices firmed ahead of the U.S. Federal Reserve's policy announcement later in the day.
Ahead of the New York day, the front-month December Brent contract on London's ICE futures exchange was up 42 cents, or 0.4%, at $109.98 a barrel. The front-month December contract on the New York Mercantile Exchange was trading up 37 cents, or 0.4%, ...