London Stock Exchange (LSE) is the largest stock exchange in Europe and the primary exchange in the United Kingdom. Originating more than 300 years ago, the regional exchanges were merged in 1973 into the Stock Exchange of Great Britain and Ireland, later renamed the London Stock Exchange (LSE). "Footsie" refers to the Financial Times Stock Exchange (FTSE) 100 Share Index, which contains 100 of the most valuable blue-chip stocks on the London Stock Exchange.

The London Stock Exchange (LSE) is one of the world’s largest and oldest stock exchanges, founded in 1801. Located in London, it serves as a key global financial hub. The LSE lists a wide range of securities, including stocks, bonds, and derivatives, and hosts companies from various industries and countries.

It operates two main markets: the Main Market, for established companies, and AIM (Alternative Investment Market), designed for smaller, growing companies. The exchange plays a central role in capital raising, providing liquidity and transparency to investors. It is known for its benchmark index, the FTSE 100, which tracks the top 100 companies by market capitalization. The LSE is vital in connecting investors to European and global financial markets.