London Stock Exchange Group plc is a United Kingdom-based stock exchange and financial information company headquartered in the City of London, England. It owns the London Stock Exchange, Refinitiv, LSEG Technology, FTSE Russell, and majority stakes in LCH and Tradeweb.

London Stock Exchange (LSE) is a stock exchange in the City of London, England, United Kingdom. As of August 2023, the total market value of all companies trading on the LSE stood at $3.18 trillion. Its current premises are situated in Paternoster Square close to St Paul's Cathedral in the City of London. Since 2007, it has been part of the London Stock Exchange Group. The LSE is the most-valued stock exchange in Europe as of 2023. According to the 2020 Office for National Statistics report, approximately 12% of UK-resident individuals reported having investments in stocks and shares. According to the 2020 Financial Conduct Authority (FCA) report, approximately 15% of UK adults reported having investments in stocks and shares.