BLACKROCK INCOME STRATEGIES TRUST PLC - Net Asset Value(s)

NET ASSET VALUE

BLACKROCK INCOME STRATEGIES TRUST PLC

The unaudited net asset values for the ordinary shares of BlackRock Income
Strategies Trust plc at close of business on 26 February 2015 were:

150.69c Cum income debt at par Sterling (pence)
145.12p Cum income debt at MV Sterling (pence)
148.93c Ex income debt at par Sterling (pence)
143.35p Ex income debt at MV Sterling (pence)

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.

3. The unaudited NAV above has been calculated on the basis of 288,412,282
Ordinary Shares in issue.