Holding(s) in Company

TT electronics PLC
22 May 2007


                TR-1: Notifications of Major Interests in Shares


1. Identity of the issuer or the underlying issuer of existing shares to which
   voting rights are attached:

   TT Electronics Plc

2. Reason for notification

   An acquisition or disposal of voting rights

3. Full name of person(s) subject to notification obligation:

   JPMorgan Chase & Co

4. Full name of shareholder(s) (if different from 3.):

   JPMorgan Asset Management (UK) Limited

5. Date of transaction (and date on which the threshold is crossed or reached if
   different):

   17 May 2007

6. Date on which issuer notified:

   21 May 2007

7. Threshold(s) that is/are crossed or reached:

   5%


8. Notified details:

A: Voting rights attached to shares

Class/type     Situation previous    Resulting situation after the triggering
of shares if   to the triggering     transaction
possible       transaction

using the      Number   Number of    Number of    Number of voting     Percentage of voting
ISIN code      of       voting       shares       rights               rights
               shares   rights 
                                                  Direct   Indirect    Direct   Indirect


GB0008711763   N/A      N/A          7,812,387             7,812,387            5.0468%


B: Financial Instruments
Resulting situation after the triggering transaction
Type of     Expiration Exercise/     Number of voting rights that may   Percentage of
financial   date       Conversion    be acquired (if the instrument is  voting
instrument             period/ date  exercised/converted)               rights



N/A


Total (A+B)


Number of voting rights                Percentage of voting rights


7,812,387                              5.0468%


9. Chain of controlled undertakings through which the voting rights and/or the
   financial instruments are effectively held, if applicable:

   Total disclosable holding for JPMorgan Chase & Co. : 7,812,387 (5.0468%)

   Holdings by controlled undertakings of JPMorgan Chase & Co. are as follows:

   JPMorgan Asset Management (UK) Limited: 7,812,387 voting rights (5.0468%)


Proxy Voting:

10. Name of proxy holder:                                                  N/A
11. Number of voting rights proxy holder will cease to hold:               N/A
12. Date on which proxy holder will cease to hold voting rights:           N/A


13. Additional information:
14. Contact name:                                      Ricky Crump
15. Contact telephone name:                            0207 777 0424


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

W J Sharp
Group Company Secretary
TT electronics plc

Date of Notification: 22 May 2007



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