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:

17 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:

2,335,672

0.60%

2,991,529

0.76%

(2)

Cash-settled derivatives:

and/or controlled:

2,494,757

0.64%

1,925,754

0.49%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

4,830,429

1.23%

4,917,283

1.26%

(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

57,860

1.3538 GBP

USD 0.10 ordinary

Purchase

52,206

1.3565 GBP

USD 0.10 ordinary

Purchase

26,489

1.3620 GBP

USD 0.10 ordinary

Purchase

22,368

1.3577 GBP

USD 0.10 ordinary

Purchase

19,881

1.3553 GBP

USD 0.10 ordinary

Purchase

18,516

1.3501 GBP

USD 0.10 ordinary

Purchase

17,555

1.3597 GBP

USD 0.10 ordinary

Purchase

12,456

1.3617 GBP

USD 0.10 ordinary

Purchase

8,000

1.3465 GBP

USD 0.10 ordinary

Purchase

4,000

1.3425 GBP

USD 0.10 ordinary

Purchase

3,842

1.3598 GBP

USD 0.10 ordinary

Purchase

2,909

1.3575 GBP

USD 0.10 ordinary

Purchase

1,471

1.3531 GBP

USD 0.10 ordinary

Purchase

1,460

1.3530 GBP

USD 0.10 ordinary

Purchase

1,306

1.3645 GBP

USD 0.10 ordinary

Purchase

1,092

1.3550 GBP

USD 0.10 ordinary

Purchase

1,000

1.3580 GBP

USD 0.10 ordinary

Purchase

546

1.3500 GBP

USD 0.10 ordinary

Purchase

518

1.3680 GBP

USD 0.10 ordinary

Purchase

64

1.3725 GBP

USD 0.10 ordinary

Sale

31,612

1.3598 GBP

USD 0.10 ordinary

Sale

18,074

1.3344 GBP

USD 0.10 ordinary

Sale

16,447

1.3605 GBP

USD 0.10 ordinary

Sale

16,000

1.3515 GBP

USD 0.10 ordinary

Sale

15,630

1.3523 GBP

USD 0.10 ordinary

Sale

12,637

1.3572 GBP

USD 0.10 ordinary

Sale

11,276

1.3585 GBP

USD 0.10 ordinary

Sale

8,274

1.3620 GBP

USD 0.10 ordinary

Sale

4,906

1.3512 GBP

USD 0.10 ordinary

Sale

3,562

1.3619 GBP

USD 0.10 ordinary

Sale

2,812

1.3545 GBP

USD 0.10 ordinary

Sale

1,888

1.3658 GBP

USD 0.10 ordinary

Sale

1,022

1.3625 GBP

USD 0.10 ordinary

Sale

423

1.3720 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

Increasing Long

12,637

1.3572 GBP

USD 0.10 ordinary

SWAP

Increasing Long

5,780

1.3579 GBP

USD 0.10 ordinary

SWAP

Increasing Long

11,276

1.3585 GBP

USD 0.10 ordinary

SWAP

Increasing Long

13,167

1.3619 GBP

USD 0.10 ordinary

SWAP

Increasing Long

8,118

1.3620 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

100

1.3521 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

50,815

1.3534 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

25,311

1.3537 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

7,045

1.3571 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

3,073

1.3574 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

23,005

1.3593 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

17,555

1.3597 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

717

1.3616 GBP

USD 0.10 ordinary

SWAP

Decreasing Long

16,705

1.3620 GBP

USD 0.10 ordinary

CFD

Decreasing Short

1,831

1.3420 GBP

USD 0.10 ordinary

CFD

Decreasing Short

11,944

1.3591 GBP

USD 0.10 ordinary

CFD

Decreasing Short

6,872

1.3620 GBP

USD 0.10 ordinary

CFD

Increasing Short

18,893

1.3579 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:

18 Mar 2025

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213