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 17 August 2012 were:

145.56p Capital only (undiluted)
144.84p Capital only (Diluted for treasury shares)
147.74p Including current year income (undiluted) XD
146.71p 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.