Director/PDMR Shareholding

Renishaw PLC
03 April 2008




NOTIFICATION OF TRANSACTIONS OF DIRECTORS/PERSONS DISCHARGING MANAGERIAL
RESPONSIBILITY AND CONNECTED PERSONS


This form is used by the issuer to make a RIS notification required by DTR
3.1.4R

+-----+------------------------------+----+-------------------------------+
|1.   |Name of the issuer            | 2. |State whether the notification |
|     |                              |    |relates to                     |
|     |RENISHAW plc                  |    |(i) a transaction notified in  |
|     |                              |    |accordance with DTR 3.1.2R; or |
|     |                              |    |                               |
|     |                              |    |                               |
|     |                              |    |(ii) a disclosure made in      |
|     |                              |    |accordance with section 793 of |
|     |                              |    |the Companies Act 2006         |
|     |                              |    |                               |
|     |                              |    |NOTIFICATION RELATES TO A      |
|     |                              |    |TRANSACTION NOTIFIED IN        |
|     |                              |    |ACCORDANCE WITH DTR 3.1.2R     |
+-----+------------------------------+----+-------------------------------+
| 3.  |Name of person discharging    |4.  |State whether notification     |
|     |managerial responsibilities / |    |relates to a person connected  |
|     |director                      |    |with a person discharging      |
|     |                              |    |managerial responsibilities /  |
|     |DANIEL JOHN DEER              |    |director named in 3 and        |
|     |                              |    |identify the connected person  |
|     |                              |    |                               |
|     |                              |    |NOTIFICATION RELATES TO THE    |
|     |                              |    |PERSON NAMED IN 3 IN RESPECT OF|
|     |                              |    |A TRANSACTION WITH A CONNECTED |
|     |                              |    |PERSON                         |
+-----+------------------------------+----+-------------------------------+
|5.   |Indicate whether the          |6.  |Description of shares          |
|     |notification is in respect of |    |(including class), debentures  |
|     |a holding of the person       |    |or derivatives or financial    |
|     |referred to in 3 or 4 above or|    |instruments relating to shares |
|     |in respect of a non-beneficial|    |                               |
|     |interest                      |    |ORDINARY SHARES OF 20P EACH    |
|     |                              |    |                               |
|     |NOTIFICATION IS IN RESPECT OF |    |                               |
|     |THE PERSON REFERRED TO IN 3   |    |                               |
|     |ABOVE FOR 7,108,629 SHARES    |    |                               |
|     |BENEFICIALLY HELD AND IN      |    |                               |
|     |RESPECT OF A NON-BENEFICIAL   |    |                               |
|     |INTEREST OF 2,990,000 SHARES  |    |                               |
+-----+------------------------------+----+-------------------------------+
|7.   |Name of registered            |8.  |State the nature of the        |
|     |shareholders(s) and, if more  |    |transaction                    |
|     |than one, the number of shares|    |                               |
|     |held by each of them          |    |TRANSFER OF SHARES BY WAY OF   |
|     |                              |    |GIFT                           |
|     |DANIEL JOHN DEER 4,118,629    |    |                               |
|     |SHARES                        |    |                               |
|     |                              |    |                               |
|     |DANIEL JOHN DEER AND MARGARET |    |                               |
|     |EILEEN DEER 5,980,000         |    |                               |
+-----+------------------------------+----+-------------------------------+



+-----+------------------------------+----+--------------------------------+
|9.   |Number of shares, debentures  |10. |Percentage of issued class      |
|     |or financial instruments      |    |acquired (treasury shares of    |
|     |relating to shares acquired   |    |that class should not be taken  |
|     |                              |    |into account when calculating   |
|     |NIL                           |    |percentage)                     |
|     |                              |    |                                |
|     |                              |    |NIL                             |
+-----+------------------------------+----+--------------------------------+
|11.  |Number of shares, debentures  |12. |Percentage of issued class      |
|     |or financial instruments      |    |disposed (treasury shares of    |
|     |relating to shares disposed   |    |that class should not be taken  |
|     |                              |    |into account when calculating   |
|     |10,098,629                    |    |percentage)                     |
|     |                              |    |                                |
|     |                              |    |13.9%                           |
+-----+------------------------------+----+--------------------------------+
|13.  |Price per share or value of   |14. |Date and place of transaction   |
|     |transaction                   |    |                                |
|     |                              |    |2 APRIL 2008, ENGLAND           |
|     |NIL CONSIDERATION             |    |                                |
+-----+------------------------------+----+--------------------------------+
|15.  |Total holding following       |16. |Date issuer informed of         |
|     |notification and total        |    |transaction                     |
|     |percentage holding following  |    |                                |
|     |notification (any treasury    |    |                                |
|     |shares should not be taken    |    |                                |
|     |into account when calculating |    |2 APRIL 2008                    |
|     |percentage)                   |    |                                |
|     |                              |    |                                |
|     |2,434,411 SHARES 3.3%         |    |                                |
+-----+------------------------------+----+--------------------------------+
|17 - |NOT APPLICABLE                                                      |
|22   |                                                                    |
+-----+------------------------------+----+--------------------------------+
|23.  |Any additional information    |24. |Name of contact and telephone   |
|     |                              |    |number for queries              |
|     |THE TRANSFEREE IS MARGARET    |    |                                |
|     |EILEEN DEER, WIFE OF THE      |    |ALLEN ROBERTS                   |
|     |PERSON NAMED IN 3             |    |                                |
|     |                              |    |01453 524445                    |
+-----+------------------------------+----+--------------------------------+



Name of duly authorised officer of issuer responsible for making notification

ALLEN ROBERTS


Date of Notification

2 April 2008




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