Conversion of Securities

Subscription Shares

Conversion of shares held in Certificated form

Shareholders who hold their shares in Certificated form wishing to exercise
their The Throgmorton Trust PLC Subscription Share Rights, should refer to the
instructions on the reverse of their Subscription Share Certificate(s).
Shareholders must lodge the relevant Subscription Share certificate(s) at the
office of the Company's Registrar, Capita Registrars, Corporate Actions, The
Registry, 34 Beckenham Road, Beckenham, Kent BR3 4TU during the period of 30
days ending on the business day prior to the relevant Subscription Date, (29
April 2010), having completed the notice of exercise, and a remittance for the
aggregate Subscription Price for the Ordinary Shares in respect of which the
Subscription Rights are being exercised.

Ordinary Shares issued pursuant to the exercise of Subscription Share rights
which are conferred by any Certificated Subscription Shares will be allotted
within ten business days of the first Business Day of the calendar month
following the month in which the relevant notice of exercise of Subscription
Share Rights is given.

Conversion through CREST

Shareholders who hold their The Throgmorton Trust PLC Subscription Shares in
Uncertificated form wishing to exercise their Subscription Share Rights, should
use the following participation and member account IDs when processing their
Uncertificated Subscription Notice:

CREST Participant ID = RA06
CREST Member Account ID = THROSUB

The form of Uncertificated Subscription Notice is an Unmatched Stock Event
("USE") instruction which should be input to settle by 3pm on the Business Day
prior to the relevant Subscription Date, along with a remittance for the
aggregate Subscription Price for the Ordinary Shares in respect of which the
Subscription Share Rights are being exercised.

Ordinary Shares issued pursuant to the exercise of Subscription Share rights
which are conferred by any Uncertificated Subscription Shares will be allotted
within ten business days of the first Business Day of the calendar month
following the month in which the relevant notice of exercise of Subscription
Share Rights is given.

Conversion through the BlackRock Stocks & shares ISA or Share Plan

Investors holding shares through the BlackRock Stocks and Shares ISA or Share
Plan wishing to exercise their Subscription Share Rights in The Throgmorton
Trust PLC should download the Savings Plan Subscription Shares Conversion Form
or Stocks & Shares ISA Subscription Shares Conversion Form which is available
from www.blackrock.co.uk/its, complete and return it to the address given at
the top of the form. Forms must be received at least seven business days before
the Subscription Date. Shares arising from the conversion will be issued within
ten business days of 3 May 2010.


Market Values

The middle market quotation of the Ordinary Shares and of the subscription
shares in The Throgmorton Trust PLC, as derived from the Stock Exchange Daily
Official List, on the first dealing day in each of the six months before the
date of this announcement and 30 March 2010, the latest practicable date before
the date of this announcement, were:

                 Ordinary Shares Subscription Shares

5 October 2009        117.75p          4.75p
2 November 2009       116.75p          4.50p
1 December 2009       114.25p          8.00p
4 January 2010        119.50p          7.50p
1 February 2010       122.50p          6.63p
1 March 2010          121.25p          6.10p
30 March 2010         135.50p         10.00p

Exercise dates

The subscription share rights conferred by the Subscription Shares will be
exercisable on each of 31 January, 30 April, 31 July and 31 October between 
31 January 2010 and 31 October 2011 (both dates inclusive).

Exercise price

146 pence per share

Contact:
Mrs K V Higgins
Company Secretary
BlackRock Investment Management (UK) Limited

Date: 31 March 2010