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 chips listed on the London Stock Exchange.

The FTSE 250 Index, also called the FTSE 250, or, informally, the "Footsie 250" , is a stock market index that measures the real strength of the economy of the United Kingdom and consists of the 101st to the 350th mid-cap blue chip companies listed on the London Stock Exchange.

The FTSE All-Share Index, originally known as the FTSE Actuaries All Share Index, is a capitalisation-weighted index, comprising around 600 of more than 2,000 companies traded on the London Stock Exchange.

(was known as FTSE–Xinhua China A50 Index) is a stock market index by FTSE Group (FTSE–Xinhua joint venture until 2010), the components were chosen from Shanghai Stock Exchange and Shenzhen Stock Exchange, which issue A-share; B-share (share for foreigners) not included.

a market capitalization weighted stock market index made up of the constituents of the FTSE 100 and FTSE 250 indices.

a series of stock market indices provided by FTSE Group.

an index of small market capitalisation companies consisting of the 351st to the 619th largest-listed companies on the London Stock Exchange main market.

+Composition by country as of March 31, 2022Country Market Weight %United States 40.52EGBI* 31.63Japan 16.03United Kingdom 4.55Others 7.28* EGBI (FTSE EMU Government Bond Index) consists of EMU-participating countries that meet the WGBI criteria for market inclusion: Austria, Belgium, Finland, France, Germany, Ireland, Italy, Netherlands, and Spain