United Kingdom's main stock market index, the GB100, fell to 9636 points on October 27, 2025, losing 0.10% from the previous session. Over the past month, the index has climbed 3.62% and is up 16.30% 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.

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.

As of May 2025, the pharmaceutical company AstraZeneca was the leading company listed on the London Exchange (LSE), with a market capitalization of 159 billion British pounds. This made them the largest of all companies listed on the LSE. Seen as the heart of the global financial community, the London Stock Exchange is the second-largest stock market in Europe and ranks eighth globally. Key information The London Stock Exchange (LSE) is among the largest stock market operators globally and ranks 11th in terms of the oldest stock exchanges in existence, with 224 years of operation as of 2025. Performance after Covid The COVID-19 pandemic had a profound effect on the global economy, causing considerable volatility on the stock market. The London Stock Exchange (LSE) saw a notable decline in the market capitalization value of its listed companies, reaching its lowest value in March 2020 at approximately three trillion British pounds in correlation with a surge in the average daily number of trades, which peaked at over two billion. Following this initial reaction, the LSE observed a decrease in the average daily active traders, alongside a gradual recovery in the market capitalization of the listed companies.

Access LSEG's London Stock Exchange (LSE) Market Data, and find benchmarks, indices, and real-time and historic market information.

Prices for United Kingdom Stock Market Index (GB100) including live quotes, historical charts and news. United Kingdom Stock Market Index (GB100) was last updated by Trading Economics this October 27 of 2025.

As of February 2025, British holding bank HSBC Holdings Plc was the leading finance company listed on the London Stock Exchange (LSE) with a total market capitalization of almost 166 billion British pounds. Second in the ranking was Spanish bank Banco Santander S.A., with a market cap of nearly 77.7 billion U.S. dollars.

Key information about United Kingdom FTSE 100

• United Kingdom FTSE 100 closed at 8,809.7 points in Feb 2025, compared with 8,674.0 points at the previous month end
• UK Equity Market Index: Month End: FTSE 100 data is updated monthly, available from Jan 1984 to Feb 2025, with an average number of 5,430.8 points
• The data reached an all-time high of 8,809.7 points in Feb 2025 and a record low of 1,010.1 points in Jul 1984

• In the latest reports, FTSE All-Share recorded a daily P/E ratio of 14.4 in Jul 2022

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.

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.

Gross and net capital stocks and consumption of fixed capital in the UK, in current prices and chained volume measures, annual estimates.

United Kingdom UK: Stocks Traded: Total Value data was reported at 2,357.017 USD bn in 2014. This records an increase from the previous number of 1,675.053 USD bn for 2013. United Kingdom UK: Stocks Traded: Total Value data is updated yearly, averaging 487.920 USD bn from Dec 1975 (Median) to 2014, with 40 observations. The data reached an all-time high of 3,947.700 USD bn in 2007 and a record low of 19.361 USD bn in 1977. United Kingdom UK: Stocks Traded: Total Value data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s United Kingdom – Table UK.World Bank.WDI: Financial Sector. The value of shares traded is the total number of shares traded, both domestic and foreign, multiplied by their respective matching prices. Figures are single counted (only one side of the transaction is considered). Companies admitted to listing and admitted to trading are included in the data. Data are end of year values converted to U.S. dollars using corresponding year-end foreign exchange rates.; ; World Federation of Exchanges database.; Sum; Stock market data were previously sourced from Standard & Poor's until they discontinued their 'Global Stock Markets Factbook' and database in April 2013. Time series have been replaced in December 2015 with data from the World Federation of Exchanges and may differ from the previous S&P definitions and methodology.

Graph and download economic data for Volatility of Stock Price Index for United Kingdom (DDSM01GBA066NWDB) from 1985 to 2021 about volatility, stocks, United Kingdom, price index, indexes, and price.

As of February 2025, Unilever Plc was the leading company among consumer staples companies on the London Stock Exchange in terms of its market capitalization, with a total value of over 111 billion British pounds. This was followed by British American Tobacco Plc and Diageo PLC, with values of over 68 billion and 48 billion British pounds, respectively.

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.

Graph and download economic data for Stock Market Capitalization to GDP for United Kingdom (DDDM01GBA156NWDB) from 1975 to 2014 about market cap, stock market, capital, United Kingdom, and GDP.

The dataset collected includes assessment output relating to the years from 1905 to 2020 inclusive for the following variables for each stock: the annual recruitment estimate, the stock size (spawning stock biomass), landings (tonnes of fish brought to shore), catches (tonnes of fish caught at sea), fishing pressure (a fishing mortality rate), Fmsy (the target fishing mortality that will achieve maximum sustainable yield in the long term), Upper and lower range estimates for Fmsy consistent with multi-annual plans and ICES advice, MSYB trigger (a threshold for spawning stock biomass, below which fishing mortality should be reduced below Fmsy, following the ICES advice rule, to avoid reduced reproductive capacity, Blim (a lower limit threshold for spawning stock biomass below which there is a high risk of reduced reproductive capacity). The stock assessment data for fish and shellfish stocks of UK interest is used to assess indicators of reproductive capacity (based on spawning stock biomass) and fishing pressure (based on fishing mortality).

The statistic shows the highs and lows of the FTSE 100 Index between 2000 and 2024. The FTSE 100 Index is a share index of the 100 companies listed on the London Stock Exchange with the highest market capitalization. It remains one of the most widely used stock indices and is regarded as a gauge of business prosperity in the United Kingdom. In 2024, the FTSE reached a yearly high of 8,445.8 and a low of 7,446.29. London Stock Exchange As of May 2024, the number of companies trading on the London Stock Exchange stood at 1,775. These companies had a combined market capitalization of approximately 3.7 trillion British pounds and 553,000 daily average trades. Largest companies on the LSE As of March 2023, Shell Plc was the leading company listed on the London Stock Exchange in terms of market capitalization. This made them the largest of all companies trading shares on the LSE in 2023 from more than 70 countries globally. Seen as the heart of the global financial community, the London Stock Exchange is the second largest stock market in Europe and ranks seventh globally.

Polestar Automotive Holding UK stock price, live market quote, shares value, historical data, intraday chart, earnings per share and news.