Holding(s) in Company

For filings with the FSA include the
 annex

 For filings with issuer exclude the
 annex


+------------------------------------------------------------------------------+
|TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES(i)                             |
+------------------------------------------------------------------------------+

+---------------------------------------------+--------------------------------+
|1. Identity of the issuer or the underlying  |                                |
|issuer                                       |         API GROUP PLC          |
|of existing shares to which voting rights are|                                |
|attached:(ii)                                |                                |
+---------------------------------------------+--------------------------------+
|2 Reason for the notification (please tick the appropriate box or boxes):     |
+-------------------------------------------------------------------+----------+
|An acquisition or disposal of voting rights                        |         |
+-------------------------------------------------------------------+----------+
|An acquisition or disposal of qualifying financial instruments     |          |
|which may result in the acquisition of shares already issued to    |          |
|which voting rights are attached                                   |          |
+-------------------------------------------------------------------+----------+
|An acquisition or disposal of instruments with similar economic    |          |
|effect to qualifying financial instruments                         |          |
+-------------------------------------------------------------------+----------+
|An event changing the breakdown of voting rights                   |          |
+-------------------------------------------------------------------+----------+
|Other (please specify):                                            |          |
+--------------------------------------+----------------------------+----------+
|3. Full name of person(s) subject to  |                                       |
|the                                   |        HARGREAVE HALE LIMITED         |
|notification obligation:(iii)         |                                       |
+--------------------------------------+---------------------------------------+
|4. Full name of shareholder(s)        |         DISCRETIONARY CLIENTS         |
|(if different from 3.):(iv)           |                                       |
+--------------------------------------+---------------------------------------+
|5. Date of the transaction and date on|                                       |
|which the threshold is crossed or     |           08 DECEMBER 2011            |
|reached:(v)                           |                                       |
+--------------------------------------+---------------------------------------+
|6. Date on which issuer notified:     |           09 DECEMBER 2011            |
+--------------------------------------+---------------------------------------+
|7. Threshold(s) that is/are crossed or|                  5%                   |
|reached:(vi, vii)                     |                                       |
+--------------------------------------+---------------------------------------+

+-------------------------------------------------------------------------------------------+
|8. Notified details:                                                                       |
+-------------------------------------------------------------------------------------------+
|A: Voting rights attached to shares(viii, ix)                                              |
+------------+-------------------+----------------------------------------------------------+
|Class/type  |Situation previous |Resulting situation after the triggering transaction      |
|of          |to the triggering  |                                                          |
|shares      |transaction        |                                                          |
|            +---------+---------+-----------------+------------------------+---------------+
|if possible |Number   |Number   |Number           |Number of voting        |% of  voting   |
|using       |of       |of       |of shares        |rights                  |rights(x)      |
|the ISIN    |  ares   | o ing   +------+----------+----------+-------------+------+--------+
|CODE        |         |Rights   |Direct|Indirect  |Direct(xi)|Indirect(xii)|Direct|Indirect|
+------------+---------+---------+------+----------+----------+-------------+------+--------+
|GB0000592062|         |         |      |          |          |             |      |        |
|            |3,767,000|3,767,000|      |3,937,000 |          |3,937,000    |      |5.1375% |
|            |         |         |      |          |          |             |      |        |
+------------+---------+---------+------+----------+----------+-------------+------+--------+

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

+-------------------------------------------------------------------------------------------+
|C: Financial Instruments with similar economic effect to Qualifying Financial              |
|Instruments(xv, xvi)                                                                       |
+-------------------------------------------------------------------------------------------+
|Resulting situation after the triggering transaction                                       |
+-------------+---------+----------+-------------+-------------+----------------------------+
|Type of      |Exercise |Expiration|Exercise/    |Number of    |% of voting rights(xix, xx) |
|financial    |price    |date(xvii)|Conversion   |voting rights|                            |
|instrument   |         |          |period(xviii)|instrument   |                            |
|             |         |          |             |refers to    |                            |
|             |         |          |             |             |                            |
+-------------+---------+----------+-------------+-------------+--------------------+-------+
|             |         |          |             |             |Nominal             |Delta  |
|             |         |          |             |             +--------------------+-------+
|             |         |          |             |             |                    |       |
+-------------+---------+----------+-------------+-------------+--------------------+-------+

+-------------------------------------------------------------------------------------------+
|Total (A+B+C)                                                                              |
+----------------------------------------+--------------------------------------------------+
|Number of voting rights                 |Percentage of voting rights                       |
+----------------------------------------+--------------------------------------------------+
|                                        |                                                  |
|3,937,000                               |5.1375%                                           |
|                                        |                                                  |
+----------------------------------------+--------------------------------------------------+

+------------------------------------------------------------------------------+
|9. Chain of controlled undertakings through which the voting rights and/or the|
|financial instruments are effectively held, if applicable:(xxi)               |
+------------------------------------------------------------------------------+
|2,105,000 of these shares are held for unit trusts operated by Marlborough    |
|Fund Managers Ltd for whom Hargreave Hale Ltd manages the portfolio of        |
|investments on a discretionary basis. The remaining shares are held for other |
|Discretionary clients.                                                        |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|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:            |David Clueit                                    |
+-----------------------------+------------------------------------------------+
|15. Contact telephone number:|01253 754739                                    |
+-----------------------------+------------------------------------------------+








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Source: API Group PLC via Thomson Reuters ONE

[HUG#1570517]