Net Asset Value(s)

BLACKROCK INCOME AND GROWTH INVESTMENT TRUST PLC.

The unaudited net asset values for BlackRock Income and Growth Investment Trust
plc at close of business 5 September 2012 were:

141.33p Capital only (undiluted)
140.67p Capital only (Diluted for treasury shares)
143.70p Including current year income (undiluted) XD
142.71p 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.