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 4 May 2012 were:

139.09p Capital only (undiluted)
138.38p Capital only (Diluted for treasury shares)
140.99p Including current year income (undiluted)
140.02p Including current year income (Diluted for treasury shares)

Notes:

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

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