Net Asset Value(s)

NET ASSET VALUE

BLACKROCK INCOME AND GROWTH INVESTMENT TRUST PLC
(Formerly known as BRITISH PORTFOLIO TRUST PLC)

The unaudited net asset values for BlackRock Income and Growth Investment Trust plc. 
at close of business 18 April 2012 was:

140.79p Capital only (undiluted)
140.02p Capital only (Diluted for treasury shares)
142.35p Including current year income (undiluted)
141.36p 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.