Form 8.3 SERICA ENERGY PLC

FORM 8.3

PUBLIC OPENING POSITION DISCLOSURE/DEALING DISCLOSURE BY

A PERSON WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR

MORE

Rule 8.3 of the Takeover Code (the "Code")

1.

KEY INFORMATION

(a)

Full name of discloser:

Barclays PLC.

(b)

Owner or controller of interest and short

positions disclosed, if different from 1(a):

(c)

Name of offeror/offeree in relation to whose

SERICA ENERGY PLC

relevant securities this form relates:

(d)

If an exempt fund manager connected with an

offeror/offeree, state this and specify identity of

offeror/offeree:

(e)

Date position held/dealing undertaken:

18 Mar 2025

(f)

In addition to the company in 1(c) above, is the discloser making

YES:

disclosures in respect of any other party to the offer?

ENQUEST PLC

2.

POSITIONS OF THE PERSON MAKING THE DISCLOSURE

(a)

Interests and short positions in the relevant securities of the offeror or offeree

to which the disclosure relates following the dealing(if any)

Class of relevant security:

USD 0.10 ordinary

Interests

Short Positions

Number

(%)

Number

(%)

(1)

Relevant securities owned

and/or controlled:

2,359,423

0.60%

2,937,586

0.75%

(2)

Cash-settled derivatives:

and/or controlled:

2,463,901

0.63%

1,963,734

0.50%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

4,823,324

1.23%

4,901,320

1.25%

(b)

Rights to subscribe for new securities (including directors and other executive

options)

Class of relevant security in relation to

which subscription right exists

Details, including nature of the rights

concerned and relevant percentages:

3.

DEALINGS (IF ANY) BY THE EXEMPT PRINCIPAL TRADER

(a)

Purchases and sales

Class of relevant

Purchase/sale

Number of

Price per unit

security

securities

USD 0.10 ordinary

Purchase

59,955

1.3861 GBP

USD 0.10 ordinary

Purchase

34,890

1.3816 GBP

USD 0.10 ordinary

Purchase

28,824

1.3765 GBP

USD 0.10 ordinary

Purchase

21,336

1.3850 GBP

USD 0.10 ordinary

Purchase

8,906

1.3831 GBP

USD 0.10 ordinary

Purchase

8,607

1.3900 GBP

USD 0.10 ordinary

Purchase

8,037

1.3824 GBP

USD 0.10 ordinary

Purchase

5,682

1.3766 GBP

USD 0.10 ordinary

Purchase

5,296

1.3800 GBP

USD 0.10 ordinary

Purchase

4,563

1.3770 GBP

USD 0.10 ordinary

Purchase

4,216

1.3756 GBP

USD 0.10 ordinary

Purchase

1,877

1.3923 GBP

USD 0.10 ordinary

Purchase

1,517

1.3844 GBP

USD 0.10 ordinary

Purchase

629

1.3869 GBP

USD 0.10 ordinary

Purchase

542

1.3865 GBP

USD 0.10 ordinary

Purchase

542

1.3745 GBP

USD 0.10 ordinary

Purchase

8

1.3890 GBP

USD 0.10 ordinary

Sale

36,000

1.3762 GBP

USD 0.10 ordinary

Sale

26,781

1.3850 GBP

USD 0.10 ordinary

Sale

16,559

1.3840 GBP

USD 0.10 ordinary

Sale

12,076

1.3788 GBP

USD 0.10 ordinary

Sale

8,627

1.3903 GBP

USD 0.10 ordinary

Sale

5,776

1.3875 GBP

USD 0.10 ordinary

Sale

4,054

1.3739 GBP

USD 0.10 ordinary

Sale

2,310

1.3797 GBP

USD 0.10 ordinary

Sale

2,279

1.3812 GBP

USD 0.10 ordinary

Sale

1,250

1.3920 GBP

USD 0.10 ordinary

Sale

1,146

1.3809 GBP

USD 0.10 ordinary

Sale

542

1.3900 GBP

USD 0.10 ordinary

Sale

325

1.3710 GBP

USD 0.10 ordinary

Sale

8

1.3890 GBP

(b)

Cash-settled derivative transactions

Class of

Product

Nature of dealing

Number of

Price per

relevant

description

reference

unit

security

securities

USD 0.10 ordinary

SWAP

Decreasing Long

8,871

1.3826 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

336

1.3827 GBP

USD 0.10 ordinary

SWAP

Increasing Long

1,856

1.3827 GBP

USD 0.10 ordinary

SWAP

Increasing Long

3,543

1.3850 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

5,156

1.3748 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

4,212

1.3800 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

11,764

1.3802 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

2,419

1.3813 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

8,906

1.3831 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

2,534

1.3850 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

629

1.3870 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

376

1.3872 GBP

USD 0.10 ordinary

CFD

Decreasing Short

663

1.3700 GBP

USD 0.10 ordinary

CFD

Decreasing Short

1,084

1.3746 GBP

USD 0.10 ordinary

CFD

Decreasing Short

13,342

1.3850 GBP

USD 0.10 ordinary

CFD

Increasing Short

44,121

1.3750 GBP

(c)

Stock-settled derivative transactions (including options)

(i)

Writing, selling, purchasing or varying

Class

Product

Writing,

Number

Exercise

Type

Expiry

Option

of

description

purchasing,

of

price

date

money

relevant

selling,

securities

per unit

paid/

security

varying etc

to which

received

option

per unit

relates

(ii)

Exercising

Class of relevant

Product description

Exercising/ exercised against

Number of

Exercise price per

security

securities

unit

(d)

Other dealings (including subscribing for new securities)

Class of relevant

Nature of Dealings

Details

Price per unit (if

security

applicable)

4.

OTHER INFORMATION

(a)

Indemnity and other dealings arrangements

Details of any indemnity or option arrangement, or any agreement or understanding,

formal or informal, relating to relevant securities which may be an inducement to deal

or refrain from dealing entered into by the exempt principal trader making the disclosure and any party

to the offer or any person acting in concert with a party to the offer:

NONE

(b)

Agreements, arrangements or understandings relating to options or derivatives

Details of any agreement, arrangement or understanding, formal or informal, between

the person making the disclosure and any other person relating to:

(i) the voting rights of any relevant securities under any option; or

(ii) the voting rights of future acquisition or disposal of any relevant securities to which

any derivative is referenced:

NONE

(c)

Attachments

Is a Supplemental Form 8 (Open Positions) attached?

NO

Date of disclosure:

19 Mar 2025

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213