TR-1: Notification of Major Interest in Shares

+------------------------------------------------------------------------------+
|TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi                               |
+------------------------------------------------------------------------------+

+----------------------------------------------+-------------------------------+
|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                             |  X  |
+------------------------------------------------------------------------+-----+
|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                                   |             Barclays Plc              |
|notification obligation: iii          |                                       |
+--------------------------------------+---------------------------------------+
|4. Full name of shareholder(s)        |           Barclays Bank Plc           |
|(if different from 3.):iv             |                                       |
+--------------------------------------+---------------------------------------+
|5. Date of the transaction and date on|                                       |
|which the threshold is crossed or     |           01 February 2011            |
|reached: v                            |                                       |
+--------------------------------------+---------------------------------------+
|6. Date on which issuer notified:     |           02 February 2011            |
+--------------------------------------+---------------------------------------+
|7. Threshold(s) that is/are crossed or|               Below 3%                |
|reached: vi, vii                      |                                       |
+--------------------------------------+---------------------------------------+

+-----------------------------------------------------------------------------------+
|8. Notified details:                                                               |
+-----------------------------------------------------------------------------------+
|A: Voting rights attached to shares viii, ix                                       |
+------------+---------------------+------------------------------------------------+
|Class/type  |Situation previous   |Resulting situation after the triggering        |
|of          |to the triggering    |transaction                                     |
|shares      |transaction          |                                                |
|            +---------+-----------+-----------+--------------------+---------------+
|if possible |Number   |Number     |Number     |Number of voting    |% of  voting   |
|using       |of       |of         |of shares  |rights              |rights x       |
|the ISIN    |  ares   |Vo ing     +-----------+-----------+--------+------+--------+
|CODE        |         |Rights     |Direct     |Direct xi  |Indirect|Direct|Indirect|
|            |         |           |           |           |xii     |      |        |
+------------+---------+-----------+-----------+-----------+--------+------+--------+
|            |         |           |           |           |        |      |        |
|            |         |           |    No     |    No     |        |      |        |
|GB0000592062|3,506,336|3,506,336  |disclosable|disclosable|        |N / A |        |
|            |         |           |  holding  |  holding  |        |      |        |
|            |         |           |           |           |        |      |        |
+------------+---------+-----------+-----------+-----------+--------+------+--------+

+-----------------------------------------------------------------------------------+
|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 voting     |% of voting   |
|financial    |price   |date xvii |Conversion  |rights instrument    |rights xix, xx|
|instrument   |        |          |period xviii|refers to            |              |
|             |        |          |            |                     |              |
+-------------+--------+----------+------------+---------------------+-------+------+
|             |        |          |            |                     |Nominal|Delta |
|             |        |          |            |                     +-------+------+
|             |        |          |            |                     |       |      |
+-------------+--------+----------+------------+---------------------+-------+------+

+-----------------------------------------------------------------------------------+
|Total (A+B+C)                                                                      |
+-----------------------------------+-----------------------------------------------+
|Number of voting rights            |Percentage of voting rights                    |
+-----------------------------------+-----------------------------------------------+
|No disclosable holding             |N / A                                          |
+-----------------------------------+-----------------------------------------------+

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

+--------------------------------------------------------------------------+
|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:            |                Geoff Smith                 |
+-----------------------------+--------------------------------------------+
|15. Contact telephone number:|               0207 116 2913                |
+-----------------------------+--------------------------------------------+
















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Source: API Group PLC via Thomson Reuters ONE

[HUG#1484624]