Holding(s) in Company

Renishaw PLC
25 March 2008



TR-1: notification of major interests in shares

+--------------------------------------------+--------------------------------+
|1. Identity of the issuer or the underlying |Renishaw 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                        |         |
+-------------------------------------------------------------------+---------+
|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    |Newton Investment Management    |
|notification obligation:                    |Limited                         |
+--------------------------------------------+--------------------------------+
|4. Full name of shareholder(s) (if different|                                |
|from 3.):                                   |                                |
+--------------------------------------------+--------------------------------+
|5. Date of the transaction (and date on     |20/03/08                        |
|which the threshold is crossed or reached if|                                |
|different):                                 |                                |
+--------------------------------------------+--------------------------------+
|6. Date on which issuer notified:           |25/03/08                        |
+--------------------------------------------+--------------------------------+
|7. Threshold(s) that is/are crossed or      |Increased from 2.98% to 3.06%   |
|reached:                                    |                                |
+--------------------------------------------+------------------------------+-+
|8. Notified details:                        |Purchase of 56,111 shares     | |
+--------------------------------------------+----------------------+-------+-+
+--------------------------------------------+----------------------+-------+-+







+--------------------------------------------------------------------------------+
|A: Voting rights attached to shares                                             |
+------------+----------------+--------------------------------------------------+
|Class/type  |Situation       |Resulting situation after the triggering          |
|of shares   |previous to the |transaction                                       |
|            |Triggering      |                                                  |
|if possible |transaction     |                                                  |
|using the   +---------+------+-------+--------------------+---------------------+
|ISIN CODE   |Number of|Number|Number |Number of voting    |% of voting rights   |
|            |Shares   |of    |of     |rights              |                     |
|            |         |Voting|shares |                    |                     |
|            |         |Rights+-------+---------+----------+----------+----------+
|            |         |viii  |Direct |Direct   |Indirect  |Direct    |Indirect  |
+------------+---------+------+-------+---------+----------+----------+----------+
|ISIN        |2,167,836|2.98% |N/A    |N/A      |2,223,947 |N/A       |3.06%     |
|            |         |      |       |         |          |          |          |
|GB0007323586|         |      |       |         |          |          |          |
+------------+---------+------+-------+---------+----------+----------+----------+

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

+-----------------------------------------------------------------------------+
|Total (A+B)                                                                  |
+-------------------------------------+---------------------------------------+
|Number of voting rights              |% of voting rights                     |
+-------------------------------------+---------------------------------------+
|2,223,947                            |3.06%                                  |
+-------------------------------------+---------------------------------------+








+-----------------------------------------------------------------------------+
|9. Chain of controlled undertakings through which the voting rights and/or   |
|the financial instruments are effectively held, if applicable:               |
+-----------------------------------------------------------------------------+
|Newton Investment Management holds these shares as discretionary Investment  |
|Managers                                                                     |
+-----------------------------------------------------------------------------+

+-----------------------------------------------------------------------------+
|Proxy Voting:                                                                |
+------------------------------------------------+----------------------------+
|10. Name of the proxy holder:                   |N/A                         |
+------------------------------------------------+----------------------------+
|11. Number of voting rights proxy holder will   |N/A                         |
|cease to hold:                                  |                            |
+------------------------------------------------+----------------------------+
|12. Date on which proxy holder will cease to    |N/A                         |
|hold voting rights:                             |                            |
+------------------------------------------------+----------------------------+

+--------------------------------+--------------------------------------------+
|13. Additional information:     |                                            |
+--------------------------------+--------------------------------------------+
|14. Contact name:               |Mike Ratford                                |
+--------------------------------+--------------------------------------------+
|15. Contact telephone number:   |[phone]                          |
+--------------------------------+--------------------------------------------+




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