Holding(s) in Company

TT electronics PLC
21 March 2007


TR-1: notification of major interests in shares

1. Identity of the issuer or the underlying              TT Electronics Plc
issuer of existing shares to which voting rights        --------------------
are attached:
-------------------------------
2. Reason for the notification (please tick the appropriate box or
boxes)                                                                   -------
--------------------------------------------
An acquisition or disposal of voting rights                                  x
--------------------------------------------                             -------
An acquisition or disposal of financial instruments which may result in       
the acquisition of shares already issued to which voting rights are      -------
attached
--------------------------------------------
An event changing the breakdown of voting rights                              
--------------------------------------------                             -------
Other (please specify):                                                       
--------------------------------------------                             -------
3. Full name of person(s) subject to the                  BlackRock, Inc.
notification obligation:                                --------------------
-------------------------------
4. Full name of shareholder(s) (if different
from 3.):                                               --------------------
-------------------------------
5. Date of the transaction (and date on which             20th March 2007
the threshold is crossed or reached if                  --------------------
different):
-------------------------------
6. Date on which issuer notified:                         21st March 2007
-------------------------------                         --------------------
7. Threshold(s) that is/are crossed or reached:           Fallen below 5%
-------------------------------                         --------------------
8. Notified details:
-------------------------------                         --------------------

A: Voting rights attached to shares
Class/type   Situation previous to the Resulting situation after the triggering
of shares    Triggering transaction    transaction
if possible
using the    Number of    Number of    Number Number of voting    % of voting
ISIN CODE    Shares       Voting       of     rights              rights
                          Rights       shares
                                       Direct Direct Indirect     Direct Indirect

GB0008711763  7,865,268    7,865,268   N/A    N/A     7,574,506   N/A      4.89%

B: Financial Instruments
Resulting situation after the triggering transaction
Type of     Expiration Exercise/     Number of voting rights that may   % of
financial   date       Conversion    be acquired if the instrument is   voting
instrument             Period/ Date  exercised/ converted.              rights


Total (A+B)
Number of voting rights                      % of voting rights

   7,574,506                                   4.89%




9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable:
BlackRock Investment Management (UK) Limited - 7,574,506 (4.89%)

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will cease to hold:

12. Date on which proxy holder will cease to hold voting rights:

13. Additional information:

14. Contact name:

15. Contact telephone number:





ANNEX NOTIFICATION OF MAJOR INTERESTS IN SHARES
A: Identity of the person or legal entity subject to the notification obligation

Full name (including legal form for legal entities) BlackRock, Inc

Contact address (registered office for legal        33 King William Street,
entities)                                           London, EC4R 9AS

Phone number                                        020 7743 4653

Other useful information (at least legal            Siobhain Cox
representative for legal persons)

B: Identity of the notifier, if applicable

Full name

Contact address

Phone number

Other useful information (e.g. functional relationship with the person or
legal entity subject to the notification obligation)

C: Additional information



Name of authorised official of the issuer responsible for making this
notification:


W J Sharp

Group Company Secretary

TT electronics plc


Date of Notification: 21 March 2007




                      This information is provided by RNS
            The company news service from the London Stock Exchange