TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi 1. Identity of the issuer or the underlying issuer Invesco Income Growth Trust plc of existing shares to which voting rights are attached: ii 2. Reason for the notification (please tick the appropriate box or boxes): An acquisition or disposal of voting rights X An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments An event changing the breakdown of voting rights Other (please specify): 3. Full name of person(s) subject to the notification obligation: iii Charles Stanley Group 4. Full name of shareholder(s) (if different from 3.):iv Charles Stanley & Co Ltd Rock (Nominees) Ltd 5. Date of the transaction and date on 2 October 2015 which the threshold is crossed or reached: v 6. Date on which issuer notified: 5 October 2015 7. Threshold(s) that is/are crossed or Above 5% reached: vi, vii 8. Notified details: A: Voting rights attached to shares viii, ix Class/type of Situation previous Resulting situation after the triggering transaction shares to the triggering transaction if possible using Number Number Number Number of voting % of voting rights x the ISIN CODE of of of shares rights Shares Voting Rights Direct Direct xi Indirect Direct Indirect xii Ordinary Shares 2,924,997 2,924,997 2,935,897 2,935,897 5.01% GB0003585725 B: Qualifying Financial Instruments Resulting situation after the triggering transaction Type of financial Expiration Exercise/ Number of voting % of voting instrument Conversion Period xiv rights that may be rights date acquired if the xiii instrument is exercised/ converted. C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi Resulting situation after the triggering transaction Type of financial Exercise Expiration Exercise/ Number of voting rights % of voting rights instrument price date Conversion period instrument refers to xix, xx xvii xviii Nominal Delta Total (A+B+C) Number of voting rights Percentage of voting rights 2,935,897 5.01% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: xxi Rock (Nominees) Limited Charles Stanley & Co Ltd Charles Stanley Group PLC is the holding company of the above Proxy Voting: 10. Name of the proxy holder: N/A 11. Number of voting rights proxy holder will cease to hold: N/A 12. Date on which proxy holder will cease to hold voting rights: N/A 13. Additional information: N/A 14. Contact name: Paul Griggs Invesco Asset Management Limited 15. Contact telephone number: 0203 753 1517