Net Asset Value(s)

NET ASSET VALUE

BLACKROCK INCOME AND GROWTH INVESTMENT TRUST PLC.

The unaudited net asset values for BlackRock Income and Growth Investment Trust
plc at close of business 7 August 2012 were:

144.91p Capital only (undiluted)
144.12p Capital only (Diluted for treasury shares)
146.48p Including current year income (undiluted) XD
145.47p Including current year income (Diluted for treasury shares) XD

Notes:

1. The Company has 28,379,268 ordinary shares in issue excluding 4,554,664
shares in treasury.

2. Investments have been valued on a bid price basis.

3. Revenue items included in net asset value, with dividends payable deducted
on the ex-dividend date.