NET ASSET VALUE

BLACKROCK THROGMORTON TRUST PLC

The unaudited net asset values for BlackRock Throgmorton Trust plc at close of
business on 28 May 2015 were:

377.07p Capital only
381.64p Including current year income
377.07p Capital only (adjusted for treasury shares)
381.64p 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.