Companies trading on the London Stock Exchange 2020, by industry
Market capitalization
  Market capitalization is the outstanding value of a company's shares and is often used to measure the size of a company and investors interest in a given enterprise. Market capital is calculated by multiplying the number of shares outstanding by the value of one share.
Finance sector
In terms of market capitalization, the largest financial company on the LSE was the UK headquartered bank HSBC Holdings Plc. The total market value of financial companies trading on the LSE totaled over 805.6 billion British pounds in November 2019.