All Companies on the London Stock Exchange At 31 July 2010 Number of Companies Market Value (m) Count of techMARK 2,713 £3,630,281 91 List Date Company Group Sector Sub Sector Country of Incorporation Region (UK only) Market Ord Shares Dep Receipts Fixed Int 12/14/2005 @UK 9537 Software & Computer Services Software UK Southeast AIM YES NO NO 8/2/2006 1PM PLC 8775 General Financial Specialty Finance UK Southwest AIM YES NO NO 5/2/2002 1ST DENTAL LABORATORIES 4533 Health Care Equipment & Services Health Care Providers UK Northeast AIM YES NO NO 3/11/2004 2 ERGO GROUP 6575 Mobile Telecommunications Mobile Telecommunications UK Northwest AIM YES NO NO 4/15/2005 21ST CENTURY TECHNOLOGY PLC 2791 Support Services Business Support Services UK London AIM YES NO NO 9/23/2005 32RED 5752 Travel & Leisure Gambling Gibraltar AIM YES NO NO 7/18/1994 3I GROUP 8775 General Financial Specialty Finance UK London UK Main Market YES NO YES 3/13/2007 3I INFRASTRUCTURE PLC 8985 Equity Investment Instruments Equity Investment Instruments Jersey Channel Islands UK Main Market YES NO NO 11/5/1953 4IMPRINT GROUP PLC 5555 Media Media Agencies UK London UK Main Market YES NO NO 3/14/1947 600 GROUP 2757 Industrial Engineering Industrial Machinery UK Northeast UK Main Market YES NO NO 10/4/2005 888 HLDGS 5752 Travel & Leisure Gambling Gibraltar International Main Market YES NO NO 10/24/2006 A&D PHARMA HLDGS NV 5333 Food & Drug Retailers Drug Retailers Netherlands International Main Market NO YES NO 11/16/2004 ABBEY PLC 3728 Household Goods Home Construction Republic of Ireland Ireland AIM YES NO NO 11/29/2007 ABBEY PROTECTION PLC 8536 Nonlife Insurance Property & Casualty Insurance UK London AIM YES NO NO 4/6/1988 ABBEYCREST 3763 Personal Goods Clothing & Accessories UK Northeast UK Main Market YES NO NO 12/11/1978 ABBOTT LABORATORIES 4537 Health Care Equipment & Services Medical Supplies USA International Main Market YES NO NO 11/3/2005 ABCAM 4573 Pharmaceuticals & Biotechnology Biotechnology UK East Anglia AIM YES NO NO 10/1/1998 ABERDEEN ALL ASIA INVESTMENT TRUST 8985 Equity Investment Instruments Equity Investment Instruments UK Scotland UK Main Market YES NO NO 12/20/2005 ABERDEEN ASIAN INCOME FUND 8985 Equity Investment Instruments Equity Investment Instruments UK Scotland UK Main Market YES NO NO 10/19/1995 ABERDEEN ASIAN SMALLER CO INV TST 8985 Equity Investment Instruments Equity Investment Instruments UK London UK Main Market YES NO NO 3/28/1991 ABERDEEN ASSET MANAGEMENT PLC 8771 General Financial Asset Managers UK Scotland UK Main Market YES NO NO 9/8/1986 ABERDEEN DEVELOPMENT CAPITAL 8985 Equity Investment Instruments Equity Investment Instruments UK Scotland UK Main Market YES NO NO 5/12/1989 ABERDEEN NEW DAWN INVESTMENT TST 8985 Equity Investment Instruments Equity Investment Instruments UK London UK Main Market YES NO NO 12/22/1989 ABERDEEN NEW THAI INVESTMENT TRUST 8985 Equity Investment Instruments Equity Investment Instruments UK London UK Main Market YES NO NO 7/9/2007 ABERDEEN PRIVATE EQUITY FUND LTD 8985 Equity Investment Instruments Equity Investment Instruments Guernsey Channel Islands UK Main Market YES NO NO 6/30/2005 ABERDEEN WARRANTS(JERSEY) 8995 Nonequity Investment Instruments Nonequity Investment Instruments Jersey Channel Islands UK Main Market NO NO NO 12/18/2001 ABERFORTH GEARED CAP & INC TRUST 8995 Nonequity Investment Instruments Nonequity Investment Instruments UK Scotland UK Main Market YES NO NO 4/30/2010 ABERFORTH GEARED INCOME TRUST PLC 8985 Equity Investment Instruments Equity Investment Instruments UK UK Main Market YES NO YES 12/10/1990 ABERFORTH SMALLER COMPANIES TRUST 8985 Equity Investment Instruments Equity Investment Instruments UK Scotland UK Main Market YES NO NO 2/7/2007 ABLON GROUP LTD 8633 Real Estate Investment & Services Real Estate Holding & Development Guernsey Channel Islands AIM YES NO NO 2/23/2005 ABSOLUTE RETURN TRUST LTD 8985 Equity Investment Instruments Equity Investment Instruments Guernsey Channel Islands UK Main Market YES NO NO 3/28/1994 ACAL 2797 Support Services Industrial Suppliers UK Southeast UK Main Market YES NO NO 6/28/2005 ACCESS INTELLIGENCE 9533 Software & Computer Services Computer Services UK Northeast AIM YES NO NO 11/1/2006 ACCIDENT EXCHANGE GROUP PLC 8775 General Financial Specialty Finance UK Midlands UK Main Market YES NO NO 10/26/2005 ACCSYS TECHNOLOGIES 2353 Construction & Materials Building Materials & Fixtures UK London AIM YES NO NO 3/8/2006 ACCUMULI PLC 9535 Software & Computer Services Internet UK Northwest AIM YES NO NO 7/9/2007 ACENCIA DEBT STRATEGIES LTD 8985 Equity Investment Instruments Equity Investment Instruments Guernsey Channel Islands UK Main Market YES NO NO 11/2/1995 ACER INC 9572 Technology Hardware & Equipment Computer Hardware Taiwan PSM NO YES NO 12/6/2006 ACM SHIPPING GROUP PLC 2777 Industrial Transportation Transportation Services UK London AIM YES NO NO 2/11/1999 ACORN INCOME FUND 8995 Nonequity Investment Instruments Nonequity Investment Instruments Guernsey Channel Islands UK Main Market YES NO NO 1/6/2006 ACP CAPITAL LTD 8775 General Financial Specialty Finance Jersey Channel Islands AIM YES NO NO 8/12/2008 ACRON JSC 1357 Chemicals Specialty Chemicals Russia International Main Market NO YES NO 10/4/2005 ACTA SPA 2733 Electronic & Electrical Equipment Electrical Components & Equipment Italy AIM YES NO NO 5/11/2001 ACTIVE CAPITAL TRUST 8985 Equity Investment Instruments Equity Investment Instruments UK Scotland UK Main Market YES NO NO 4/22/2010 ACUITY ENVIRONMENTAL VCT PLC 8985 Equity Investment Instruments Equity Investment Instruments UK London UK Main Market YES NO NO 12/3/2004 ACUITY GROWTH VCT PLC 8985 Equity Investment Instruments Equity Investment Instruments UK London UK Main Market YES NO NO 12/1/2005 ACUITY VCT 3 PLC 8985 Equity Investment Instruments Equity Investment Instruments UK London UK Main Market YES NO NO 10/14/2002 ADALTA REAL PLC 8633 Real Estate Investment & Services Real Estate Holding & Development UK Southeast AIM YES NO NO 6/30/2005 ADC ZEROS 2010 PLC 8995 Nonequity Investment Instruments Nonequity Investment Instruments UK UK Main Market NO NO YES 6/30/2005 ADC ZEROS 2012 8995 Nonequity Investment Instruments Nonequity Investment Instruments UK UK Main Market NO NO YES 2/15/2006 ADEPT TELECOM 6535 Fixed Line Telecommunications Fixed Line Telecommunications UK Southeast AIM YES NO NO 9/28/2004 ADMIRAL GROUP PLC 8534 Nonlife Insurance Insurance Brokers UK Wales UK Main Market YES NO NO 11/10/2009 ADVANCE DEVELOPING MARKETS FD LTD 8985 Equity Investment Instruments Equity Investment Instruments Guernsey Channel Islands UK Main Market YES NO NO 6/22/1998 ADVANCE DEVELOPING MARKETS TRUST 8985 Equity Investment Instruments Equity Investment Instruments UK London UK Main Market YES NO NO 6/15/2007 ADVANCE FRONTIER MARKETS FUND LTD 8985 Equity Investment Instruments Equity Investment Instruments Guernsey Channel Islands AIM YES NO NO 11/24/1997 ADVANCE UK TRUST 8985 Equity Investment Instruments Equity Investment Instruments UK London UK Main Market YES NO NO 8/27/2008 ADVANCED COMPUTER SOFTWARE PLC 9537 Software & Computer Services Software UK London AIM YES NO NO 4/30/2002 ADVANCED MEDICAL SOLUTIONS GROUP 4537 Health Care Equipment & Services Medical Supplies UK Northwest AIM YES NO NO 11/12/2002 ADVANCED POWER COMPONENTS 2733 Electronic & Electrical Equipment Electrical Components & Equipment UK Southeast AIM YES NO NO 7/1/2004 ADVENTIS GROUP 5555 Media Media Agencies UK London AIM YES NO NO 3/20/2000 ADVFN 8775 General Financial Specialty Finance UK London AIM YES NO NO 9/26/1996 AEA TECHNOLOGY 2791 Support Services Business Support Services UK Southeast UK Main Market YES NO NO 12/10/2004 AEC EDUCATION 2793 Support Services Business Training & Employment Agencies UK London AIM YES NO NO 7/27/1938 AECI 7 Preference Preference South Africa International Main Market NO NO YES 9/10/1984 AEGIS GROUP 5555 Media Media Agencies UK London UK Main Market YES NO NO 6/23/1975 AEGON NV 8575 Life Insurance Life Insurance Netherlands International Main Market YES NO NO 10/2/2006 AER LINGUS GROUP PLC 5751 Travel & Leisure Airlines Republic of Ireland Ireland International Main Market YES NO NO 4/24/2007 AFC ENERGY PLC 2733 Electronic & Electrical Equipment Electrical Components & Equipment UK Southeast AIM YES NO NO 5/11/2007 AFI DEVELOPMENT PLC 8733 Real Estate Real Estate Holding & Development Cyprus International Main Market YES YES NO 12/3/2009 AFREN 533 Oil & Gas Producers Exploration & Production UK London UK Main Market YES NO NO 7/24/2007 AFRICA OPPORTUNITY FUND LTD 8985 Equity Investment Instruments Equity Investment Instruments Cayman Islands AIM YES NO NO 9/18/1998 AFRICAN AURA MINING INC 1775 Mining General Mining Canada AIM YES NO NO 3/24/2010 AFRICAN BARRICK GOLD PLC 1777 Mining Gold Mining UK UK Main Market YES NO NO 6/30/2006 AFRICAN CONSOLIDATED RESOURCES PLC 1777 Mining Gold Mining UK Southeast AIM YES NO NO 11/12/2004 AFRICAN COPPER 1755 Industrial Metals Nonferrous Metals UK London AIM YES NO NO 7/14/2003 AFRICAN DIAMONDS 1773 Mining Diamonds & Gemstones UK Overseas AIM YES NO NO 6/25/2003 AFRICAN EAGLE RESOURCES 1777 Mining Gold Mining UK London AIM YES NO NO 12/10/2008 AFRICAN MEDICAL INVESTMENTS PLC 4533 Health Care Equipment & Services Health Care Providers Isle of Man Northwest AIM YES NO NO 2/10/2005 AFRICAN MINERALS LTD 1775 Mining General Mining Bermuda AIM YES NO NO 9/17/1941 AGA RANGEMASTER GROUP PLC 3722 Household Goods Durable Household Products UK Midlands UK Main Market YES NO NO 9/29/1997 AGGREKO