Britain, like the United States and some other nations, is increasingly trying to project its borders outward, drawing on government databases and international watch lists to flag suspicious travelers before they reach the country.
Britain's e-border program, proposed in 2003, aims to pre-screen air passengers, deny entry to dangerous criminals and generally speed processing at Britain's busy border crossings.
Yet Independent border inspector John Vine, author of the report, told BBC television that simply "was not happening." Despite spending about 427 million pounds (USD 682 million) since 2007, there has been no appreciable difference in processing speeds and the promised savings have yet to materialize, the report said.
Vine did say the e-border system had proven a helpful tool for the British police, whose use of border data has led to hundreds of arrests.
Britain's government said in a statement that its Border Force "is making significant improvements.