British Electric Traction Company Limited, renamed BET plc in 1985, was a large British industrial conglomerate. It was once a constituent of the FTSE 100 Index but was acquired by Rentokil in 1996, and the merged company is now known as Rentokil Initial.

The Financial Times Stock Exchange 100 Index, also called the FTSE 100 Index, FTSE 100, FTSE, or, informally, the "Footsie", is the United Kingdom's best-known stock market index of the 100 most highly capitalised blue chip companies listed on the London Stock Exchange. Founded in 1984 by the Stock Exchange to better reflect activity on the market, it replaced the Financial Times own FT 30.