Holding(s) in Company

Renishaw PLC
03 April 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                         |   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     |Daniel John Deer in respect of|
|notification obligation:                     |all of the shares contained in|
|                                             |this notification and Margaret|
|                                             |Eileen Deer as a joint holder |
|                                             |   in respect of the shares   |
|                                             |   mentioned in box A below   |
+---------------------------------------------+------------------------------+
|4. Full name of shareholder(s) (if different |              -               |
|from 3.):                                    |                              |
+---------------------------------------------+------------------------------+
|5. Date of the transaction (and date on which|         2 April 2008         |
|the threshold is crossed or reached if       |                              |
|different):                                  |                              |
+---------------------------------------------+------------------------------+
|6. Date on which issuer notified:            |         2 April 2008         |
+---------------------------------------------+------------------------------+
|7. Threshold(s) that is/are crossed or       |    Below 4% but above 3%     |
|reached:                                     |                              |
+---------------------------------------------+------------------------------+
|8. Notified details:                         |                              |
+---------------------------------------------+----------------------+-------+
+---------------------------------------------+----------------------+-------+







+----------------------------------------------------------------------------------+
|A: Voting rights attached to shares                                               |
+----------+---------------------+-------------------------------------------------+
|Class/type|Situation previous to|Resulting situation after the triggering         |
|of shares |the Triggering       |transaction                                      |
|          |transaction          |                                                 |
|if        +----------+----------+----------+-------------------+------------------+
|possible  |Number of |Number of |Number of |Number of voting   |% of voting rights|
|using the |Shares    |Voting    |shares    |rights             |                  |
|ISIN CODE |          |Rights    +----------+----------+--------+---------+--------+
|          |          |viii      |Direct    |Direct x  |Indirect|Direct   |Indirect|
|          |          |          |          |          |xi      |         |        |
+----------+----------+----------+----------+----------+--------+---------+--------+
|Ordinary  |12,533,040|12,533,040|          |          |        |         |        |
|20p       |          |          |          |          |        |         |        |
|          |(5,940,000|(5,940,000|          |          |   -    |3.3%     |   -    |
|          |held      |held      |          |          |        |         |        |
|          |jointly by|jointly by|2,434,411 |2,434,411 |        |         |        |
|          |D J Deer  |D J Deer  |          |          |        |         |        |
|          |and M E   |and M E   |          |          |        |         |        |
|          |Deer)     |Deer)     |          |          |        |         |        |
+----------+----------+----------+----------+----------+--------+---------+--------+

+------------------------------------------------------------------------------+
|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.         |           |
+---------------+-----------+------------------+-------------------+-----------+
|               |           |                  |                   |           |
|               |           |                  |                   |           |
|N/A            |           |                  |                   |           |
+---------------+-----------+------------------+-------------------+-----------+

+-----------------------------------------------------------------------------+
|Total (A+B)                                                                  |
+-------------------------------------+---------------------------------------+
|Number of voting rights              |% of voting rights                     |
+-------------------------------------+---------------------------------------+
|2,434,411                            |3.3%                                   |
+-------------------------------------+---------------------------------------+







+-----------------------------------------------------------------------------+
|9. Chain of controlled undertakings through which the voting rights and/or   |
|the financial instruments are effectively held, if applicable xv:            |
+-----------------------------------------------------------------------------+
|N/A                                                                          |
+-----------------------------------------------------------------------------+

+-----------------------------------------------------------------------------+
|Proxy Voting:                                                                |
+------------------------------------------------+----------------------------+
|10. Name of the proxy holder:                   |N/A                         |
+------------------------------------------------+----------------------------+
|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:     |Shares transferred to wife, Margaret Eileen |
|                                |Deer.                                       |
+--------------------------------+--------------------------------------------+
|14. Contact name:               |NORMA TANG                                  |
+--------------------------------+--------------------------------------------+
|15. Contact telephone number:   |01453 524524                                |
+--------------------------------+--------------------------------------------+




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