Holding(s) in Company

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| Source: EnQuest PLC
For filings
with the FCA
include the
annex
For filings
with issuer
exclude the
annex

TR-1:
NOTIFICATION
OF MAJOR
INTEREST IN
SHARESi

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 acquisition         X
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     Schroders
of person(s)     plc
subject to the
notification
obligation:
iii
4. Full name
of
shareholder(s)
(if different
from 3.):iv
5. Date of the   8 May
transaction      2014
and date on
which the
threshold is
crossed or
reached: v
6. Date on       9 May
which issuer     2014
notified:
7.               Above 5%
Threshold(s)
that is/are
crossed or
reached: vi,
vii

8. Notified details:
A: Voting rights
attached to shares
viii, ix
Class/type of shares  Situation                 Resulting
                      previous to               situation after
                      the                       the triggering
                      triggering                transaction
                      transaction
if possible using     Number of   Number of     Number of           Number
% of
the ISIN CODE         Shares      Voting        shares              of
voting
                                  Rights                            voting
rights
                                                                    rights
x
                                                Direct              Direct
Indirect    Direct  Indirect
                                                                    xi      xii
OrdinaryGB00B635TG28  Below 5%    Below 5%      44,763,586          N/A
40,204,930  N/A     5.009%

B: Qualifying
Financial
Instruments
Resulting situation
after the triggering
transaction
Type of financial         Expiration        Exercise/                 Number of
% of
instrument                date xiii         Conversion                voting
voting
                                            Period xiv                rights
rights
                                                                      that may
                                                                      be
                                                                      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 financial       Exercise  Expiration  Exercise/   Number of
% of voting rights xix, xx
instrument              price     date xvii   Conversion  voting
                                              period      rights
                                              xviii       instrument
                                                          refers to
CFD                     N/A       N/A         N/A         182,633
Nominal  Delta

0.023%   1

Total (A+B+C)
Number of voting                                          Percentage
rights                                                    of voting
                                                          rights
40,387,563                                                5.032%

9. Chain of
controlled
undertakings
through which
the voting
rights and/or
the financial
instruments
are
effectively
held, if
applicable:
xxi
Cazenove
Capital
Management
Limited
131,950
0.016%Schroder
Investment
Management
Limited
36,666,967
4.568%Schroder
Investment
Management
North America
Limited
3,588,646
0.447%

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  The shares
information:    referred to in
                section 9 are
                held in
                portfolios
                managed by those
                firms on a
                discretionary
                basis for
                clients under
                investment
                management
                agreements. This
                disclosure has
                been calculated
                based on issue
                share capital
                amount
                802,660,757.
14. Contact     Stefan
name:           RickettsGeneral
                Counsel and
                Company
                Secretary
15. Contact     0207 925 4900
telephone
number: