NOTIFICATION OF MAJOR INTEREST IN SHARES


+---------+----+++----------+
|1. Identity of |Enquest PLC|
|the issuer or  |           |
|the            |           |
|underlying     |           |
|issuer         |           |
|  of existing  |           |
|shares to      |           |
|which voting   |           |
|rights are     |           |
|  attached:ii  |           |
+---------+----+++----------+
|2 Reason for               |
|the                        |
|notification               |
|(please tick               |
|the                        |
|appropriate                |
|box or boxes):             |
+---------+----+++----------+
|An              |Yes       |
|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  |EnQuest     |
|of person(s)  |PLC         |
|subject to    |Employee    |
|the           |Benefit     |
|  notification|Trust       |
|obligation:   |            |
|iii           |            |
+---------+----+++----------+
|4. Full name  |N/A         |
|of            |            |
|shareholder(s)|            |
|  (if         |            |
|different from|            |
|3.):iv        |            |
+---------+----+++----------+
|5. Date of the|11          |
|transaction   |October     |
|and date   on |2013        |
|  which the   |            |
|threshold is  |            |
|crossed or    |            |
|  reached: v  |            |
+---------+----+++----------+
|6. Date on    |16          |
|which issuer  |October     |
|notified:     |2013        |
+---------+----+++----------+
|7.            |Above 3%    |
|Threshold(s)  |            |
|that is/are   |            |
|crossed   or  |            |
|  reached: vi,|            |
|  vii         |            |
+---------+----+++----------+
|         |    |||          |
+---------+----+++----------+

+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|8. Notified details:
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|A: Voting rights attached to shares viii, ix
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|Class/type of          |Situation previous                   |Resulting
situation   after the triggering transaction
|
|  shares               |  to the triggering                  |
|
|                       |  transaction                        |
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|if   possible using    |Number         |Number               |Number
|Number of voting       |% of voting rights x                             |
|  the ISIN CODE        |  of           |  of                 |  of shares
|  rights               |                                                 |
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|                       |Shares         |Voting               |Direct
|Direct xi |Indirect xii|Direct                      |Indirect            |
|                       |               |  Rights             |
|          |            |                            |                    |
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|GBP0.05 Ordinary Shares|N/A            |N/A                  |25,865,589
|25,865,589|            |3.22                        |                    |
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|B: Qualifying Financial Instruments
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|Resulting situation   after the triggering transaction
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|Type of financial        |Expiration              |Exercise/
|Number of voting                              |% of voting              |
|  instrument             |  date xiii             |  Conversion Period xiv
|  rights that may be                          |  rights                 |
|                         |                        |
|  acquired if the                             |                         |
|                         |                        |
|  instrument is                               |                         |
|                         |                        |
|  exercised/ converted.                       |                         |
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|N/A                      |N/A                     |N/A
|N/A                                           |N/A                      |
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|C: Financial Instruments with   similar economic effect to Qualifying Financial
Instruments xv, xvi
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|Resulting situation   after the triggering transaction
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|Type of financial       |Exercise price|Expiration date xvii|Exercise/
|Number of voting   rights instrument refers to|% of voting rights xix, xx|
|  instrument            |              |                    |  Conversion
period xviii|                                              |
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|                        |              |                    |
|                                              |Nominal|Delta             |
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|                        |              |                    |
|                                              |       |                  |
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|Total (A+B+C)
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|Number of voting   rights                                     |Percentage of
voting rights
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|25,865,589                                                    |3.22%
|
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+
|                       |||             |          |         |||
||         |            |                      ||    | |                  |
+-----------------------+++-------------+----------+---------+++----------------
-------++---------+------------+----------------------++----+-+-----------------
-+

+------------+-+-------------+
|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.       |  Notification |
|Additional  |  is based on  |
|information:|total voting   |
|            |rightsfigure of|
|            |802,660,757    |
+------------+-+-------------+
|14. Contact |Melanie        |
|name:       |TravisAssistant|
|            |Company        |
|            |Secretary      |
+------------+-+-------------+
|15. Contact |020 7925 4900  |
|telephone   |               |
|number:     |               |
+------------+-+-------------+
|            | |             |
+------------+-+-------------+

Attachments

10179081.pdf
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