NET ASSET VALUE

BLACKROCK THROGMORTON TRUST PLC

The unaudited net asset values for BlackRock Throgmorton Trust plc at close of
business on 23 April 2015 were:

358.79p Capital only
362.50p Including current year revenue
358.79p Capital only (adjusted for treasury shares)
362.50p Including current year income (adjusted for treasury shares)

Notes:

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

2. The Company's issued share capital comprises 73,130,326 Ordinary Shares and
7,400,000 Treasury Shares.

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