United Kingdom's main stock market index, the GB100, fell to 9427 points on October 10, 2025, losing 0.86% from the previous session. Over the past month, the index has climbed 1.40% and is up 14.22% compared to the same time last year, according to trading on a contract for difference (CFD) that tracks this benchmark index from United Kingdom. United Kingdom Stock Market Index (GB100) - values, historical data, forecasts and news - updated on October of 2025.

Between the first quarter of 2007 and the fourth quarter of 2024, the lowest market capitalization of all companies listed on the London Stock Exchange (LSE) was recorded in the first quarter of 2009, at *** trillion British pounds. As of the fourth quarter of 2024, the market capitalization of the entire LSE amounted to *** trillion British pounds. Although the value of companies trading has fluctuated and increased overall, a downward trend can be seen in the number of companies listed on the LSE.

The total market capitalization of all companies trading on the London Stock Exchange (LSE) took a large hit during the early months of 2020, due mostly part to a mass sell-off of shares caused by the fears surrounding the global coronavirus (COVID-19) pandemic. Between December 2019 and March 2020, the total value of market capitalization decreased by more than *** billion British pounds (GBP). The overall number of companies currently trading has also been falling. The number of daily trades spiked in March 2020 and then decreased as well. As of February 2025, the total market value of all companies trading on the London Stock Exchange stood at over **** trillion British pounds. European stock exchanges While almost every country has a stock Exchange, in Europe only five exchanges are considered major, with total market capital amounting to over *** trillion euros. The London Stock Exchange is the second largest in Europe and tenth largest worldwide. As of January 2025, Europe’s largest stock exchange, Euronext had a total market capital of listed companies valued at approximately **** trillion U.S. dollars.

London Stock Exchange stock price, live market quote, shares value, historical data, intraday chart, earnings per share and news.

Largest UK companies by market cap

The largest UK companies by market cap are those listed on the UK stock exchange with the highest total value of all shares, representing their perceived worth by investors. These companies, such as BP, Shell, Unilever, HSBC Holdings, and GlaxoSmithKline, are considered some of the most valuable and powerful in the country, with a significant impact on the global economy. AstraZeneca, Rio Tinto, and Reckitt Benckiser are also notable high-market cap companies in the UK, reflecting their strong foothold in their respective markets.

United Kingdom Market Capitalisation: AIM: Basic Materials data was reported at 5,260.048 GBP mn in Oct 2018. This records a decrease from the previous number of 5,688.683 GBP mn for Sep 2018. United Kingdom Market Capitalisation: AIM: Basic Materials data is updated monthly, averaging 7,985.973 GBP mn from Jan 2006 (Median) to Oct 2018, with 154 observations. The data reached an all-time high of 20,688.600 GBP mn in Mar 2007 and a record low of 3,683.827 GBP mn in Jan 2016. United Kingdom Market Capitalisation: AIM: Basic Materials data remains active status in CEIC and is reported by London Stock Exchange. The data is categorized under Global Database’s United Kingdom – Table UK.Z006: London Stock Exchange: Market Capitalisation: AIM Market.

Stock and commodity exchanges can benefit from various sources of revenue, ranging from fees charged through the purchasing and selling of stocks and commodities to the listing of companies on exchanges with IPOs. Yet, this hasn't meant exchanges have been free of challenges, with many companies looking to more attractive overseas markets in countries like the US that embrace stronger growth. The most notable culprits have been ARM and CRH, refusing to put up with the increasingly cheaper valuations offered by UK stock exchanges.Stock and commodity exchange revenue is expected to boom at a compound annual rate of 13% over the five years through 2025-26 to £18 billion, including growth of 5.2% in 2025-26. Boosted by the London Stock Exchange Group's Refinitiv purchase in 2021-22, the growth numbers seem inflated. The industry saw ample consolidations, aided by MiFID II's initiation in 2018. However, M&As have slumped over recent years as a result of high borrowing costs and a foggy economic outlook. Interest rate cuts and growing confidence are set to facilitate a modest recovery over the two years through 2025, driving revenue growth and supporting profit of 25.7% in 2025-26. Exchanges have also capitalised on volatile markets, with nervous investors triggering sharp sell-offs amid a tense geopolitical backdrop with Trump’s tariff policies. Consolidation amongst the largest players has been frequent, ratcheting up market share concentration. This will also prompt smaller exchanges to target niche markets and potentially band together in networks or alliances to pool liquidity and strengthen bargaining power. Revenue is forecast to climb at a compound annual rate of 4.7% over the five years through 2030-31 to £22.7 billion. Over the short term, sticky inflation and how aggressively the Bank of England cuts rates will incite volatility and fuel trading on exchanges, driving revenue growth. Geopolitical tensions also show no signs of cooling, with the potential for matters to even escalate, keeping markets edgy and increasing the likelihood of large market swings. The use of blockchain will become more prevalent, with major player, the London Stock Exchange Group, already introducing a blockchain-based infrastructure platform for private markets. These exchanges allow for 24/7 trading, lower settlement times, and often lower fees, which can attract retail and institutional participants, driving fee income.

United Kingdom Number of Listed Companies: Annual: Equities data was reported at 990.000 Unit in 2017. This records an increase from the previous number of 982.000 Unit for 2016. United Kingdom Number of Listed Companies: Annual: Equities data is updated yearly, averaging 2,010.500 Unit from Dec 1972 (Median) to 2017, with 46 observations. The data reached an all-time high of 3,585.000 Unit in 1973 and a record low of 973.000 Unit in 2014. United Kingdom Number of Listed Companies: Annual: Equities data remains active status in CEIC and is reported by London Stock Exchange. The data is categorized under Global Database’s United Kingdom – Table UK.Z013: London Stock Exchange: Number of Listed Companies and Securities.

London Stock Exchange reported GBP47.62B in Market Capitalization this October of 2025, considering the latest stock price and the number of outstanding shares.Data for London Stock Exchange | LSE - Market Capitalization including historical, tables and charts were last updated by Trading Economics this last October in 2025.

United Kingdom Turnover: Volume: AIM: Total data was reported at 133,953,298.006 Unit th in Mar 2025. This records an increase from the previous number of 101,747,335.128 Unit th for Feb 2025. United Kingdom Turnover: Volume: AIM: Total data is updated monthly, averaging 31,651,339.929 Unit th from Jan 2006 (Median) to Mar 2025, with 231 observations. The data reached an all-time high of 173,519,534.744 Unit th in Jul 2024 and a record low of 7,173,058.808 Unit th in Aug 2010. United Kingdom Turnover: Volume: AIM: Total data remains active status in CEIC and is reported by London Stock Exchange. The data is categorized under Global Database’s United Kingdom – Table UK.Z008: London Stock Exchange: Turnover: AIM Market.

Graph and download economic data for Financial Market: Share Prices for United Kingdom (SPASTT01GBM661N) from Dec 1957 to Aug 2025 about stock market and United Kingdom.

United Kingdom Market Capitalization: LSE: Annual: Equities data was reported at 2,624,992.105 GBP mn in 2017. This records an increase from the previous number of 2,366,329.969 GBP mn for 2016. United Kingdom Market Capitalization: LSE: Annual: Equities data is updated yearly, averaging 855,216.150 GBP mn from Dec 1972 (Median) to 2017, with 46 observations. The data reached an all-time high of 2,624,992.105 GBP mn in 2017 and a record low of 17,465.700 GBP mn in 1974. United Kingdom Market Capitalization: LSE: Annual: Equities data remains active status in CEIC and is reported by London Stock Exchange. The data is categorized under Global Database’s United Kingdom – Table UK.Z004: London Stock Exchange: Market Capitalisation.

United Kingdom Market Capitalisation: UK Main Market: Total data was reported at 2,499,251.385 GBP mn in Mar 2025. This records a decrease from the previous number of 2,527,274.100 GBP mn for Feb 2025. United Kingdom Market Capitalisation: UK Main Market: Total data is updated monthly, averaging 2,256,749.813 GBP mn from Feb 2017 (Median) to Mar 2025, with 98 observations. The data reached an all-time high of 2,527,274.100 GBP mn in Feb 2025 and a record low of 1,618,175.400 GBP mn in Oct 2020. United Kingdom Market Capitalisation: UK Main Market: Total data remains active status in CEIC and is reported by London Stock Exchange. The data is categorized under Global Database’s United Kingdom – Table UK.Z004: London Stock Exchange: Market Capitalisation: Main Market.

United Kingdom Number of Listed Companies: Annual: AIM data was reported at 982.000 Unit in 2016. This records a decrease from the previous number of 1,044.000 Unit for 2015. United Kingdom Number of Listed Companies: Annual: AIM data is updated yearly, averaging 1,032.500 Unit from Dec 1995 (Median) to 2016, with 22 observations. The data reached an all-time high of 1,694.000 Unit in 2007 and a record low of 121.000 Unit in 1995. United Kingdom Number of Listed Companies: Annual: AIM data remains active status in CEIC and is reported by London Stock Exchange. The data is categorized under Global Database’s United Kingdom – Table UK.Z013: London Stock Exchange: Number of Listed Companies and Securities.

Stock market return (%, year-on-year) in United Kingdom was reported at 14.38 % in 2021, according to the World Bank collection of development indicators, compiled from officially recognized sources. United Kingdom - Stock market return (%, year-on-year) - actual values, historical data, forecasts and projections were sourced from the World Bank on October of 2025.

Graph and download economic data for Security Price Index, British Railway Common Shares, Stock Exchange Value for London, Great Britain (M11014GB00LONM324NNBR) from Apr 1887 to Mar 1935 about stocks, United Kingdom, securities, price index, indexes, and price.

Comprehensive dataset containing 25 verified Stock exchange building businesses in United Kingdom with complete contact information, ratings, reviews, and location data.

Comprehensive collection of financial reports and documents for London Stock Exchange Group PLC (LSEG)

United Kingdom Number of New Issues: Introductions & Others data was reported at 3.000 Unit in Oct 2018. This records an increase from the previous number of 0.000 Unit for Sep 2018. United Kingdom Number of New Issues: Introductions & Others data is updated monthly, averaging 2.000 Unit from Jan 2018 (Median) to Oct 2018, with 10 observations. The data reached an all-time high of 6.000 Unit in Mar 2018 and a record low of 0.000 Unit in Sep 2018. United Kingdom Number of New Issues: Introductions & Others data remains active status in CEIC and is reported by London Stock Exchange. The data is categorized under Global Database’s United Kingdom – Table UK.Z012: London Stock Exchange: Number of Issues and Cancellations.

The number of banks trading on the London Stock Exchange (LSE) fluctuated significantly between June 2004 and December 2023, reaching its peak at ** in June 2008. June 2017, on the other hand, saw the lowest number during this period, totaling **. As of December 2023, there were ** banks trading on the LSE.