The M&G High Income Investment Trust is an London Listed Investment Trust. The Company was incorporated on 23 December 1996 and is a split capital investment trust company with three share classes (Zero Dividend Preference Shares, Income Shares and Capital Shares).

http://www.shareshop.hsbc.co.uk/shareshop/security.cgi?username=&ac=&csi=12782&record_search=1&search_phrase=M&G High Income Investment Trust

http://www.shareshop.hsbc.co.uk/shareshop/security.cgi?username=&ac=&csi=12781&record_search=1&search_phrase=M&G High Income Investment Trust

http://www.shareshop.hsbc.co.uk/shareshop/security.cgi?username=&ac=&csi=12785&record_search=1&search_phrase=M&G High Income Investment Trust

It’s top twenty holdings are:

Treasury 1.00% 2017  8.90% ‘AAA’ credit rated bonds
Treasury 1.25% IL 2017  8.69% ‘AAA’ credit rated bonds
Royal Dutch Shell ‘B’ 4.30% Oil & gas producers
British American Tobacco 4.16% Tobacco
AstraZeneca  3.61% Pharmaceuticals & biotechnology
GlaxoSmithKline 3.45% Pharmaceuticals & biotechnology
HSBC Holdings 3.00% Banks
Vodafone Group 2.70% Mobile telecommunications
BP 2.56% Oil & gas producers
Sage Group 2.19% Software & computer services
Unilever 2.07% Food producers
Imperial Tobacco 2.02% Tobacco
Aviva 1.91% Life insurance
BT Group 1.80% Fixed line telecommunications
RELX 1.79% Media
National Grid 1.62% Gas, water & multi-utilities
United Utilities  1.62% Gas, water & multi-utilities
Legal & General Group 1.57% Life insurance
Essentra 1.49% Support services
Rio Tinto 1.34% Mining

Twenty largest holdings 60.79% = £254million

http://docs.mandg.com/AR/MandG-High-Income-Investment-Trust_Annual-Report-and-Accounts_GB_ENG.pdf