A Worldwide range of stock-market indices. FTSE Group is an independent company whose sole business is the creation and management of indices and associated data services. FTSE has no capital markets involvement. The company originated as a joint venture between the Financial Times and the London Stock Exchange.
http://www.ftse.com

Official site. Enable companies from around the world to raise the capital they need to grow, by listing securities on our highly efficient, transparent and well regulated markets. Through our two primary markets, the Main Market and AIM, give companies access to one of the world’s deepest and most liquid pools of investment capital. Once companies have been admitted to trading, use our expertise of the global financial markets to help them maximise the value of their listing in London.
http://www.londonstockexchange.com

Online trading that is clear, simple and efficient.
http://www.stockbrokers.barclays.co.uk

Independent information and services to help private investors. Our website www.proshare.org is our main point of contact with private investors and contains fact sheets on different aspects of investing in shares as well as guides to information sources and professional advisers and gives access to free annual reports. We also provide a telephone helpline to private investors with queries or concerns about share ownership.
http://www.proshareclubs.co.uk

Comprehensive personal finance and investment services and share dealing online. Like all Virgin companies, Virgin Money was launched to give customers a better deal. We aim to offer you a wide range of great value financial products that are easy to understand and sort out. Plain English and straightforward dealing are what we believe in, backed by real customer service.
http://www.virginmoney.co.uk