Form 8.3 OXFORD BIOMEDICA 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

OXFORD BIOMEDICA 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:

14 Jan 2026

(f)

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

NO

disclosures in respect of any other party to the offer?

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:

50p ordinary

Interests

Short Positions

Number

(%)

Number

(%)

(1)

Relevant securities owned

and/or controlled:

155,917

0.13%

1,063,223

0.88%

(2)

Cash-settled derivatives:

1,001,319

0.83%

146,692

0.12%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

1,157,236

0.96%

1,209,915

1.00%

(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 PERSON MAKING THE DISCLOSURE

(a)

Purchases and sales

Class of relevant

Purchase/sale

Number of

Price per unit

security

securities

50p ordinary

Purchase

47,154

7.4975 GBP

50p ordinary

Purchase

13,145

7.8242 GBP

50p ordinary

Purchase

4,681

8.0383 GBP

50p ordinary

Purchase

4,115

7.5594 GBP

50p ordinary

Purchase

3,912

7.3887 GBP

50p ordinary

Purchase

3,760

7.7808 GBP

50p ordinary

Purchase

3,347

7.5471 GBP

50p ordinary

Purchase

2,137

8.0400 GBP

50p ordinary

Purchase

1,454

7.3564 GBP

50p ordinary

Purchase

1,317

8.0079 GBP

50p ordinary

Purchase

976

7.6362 GBP

50p ordinary

Purchase

825

7.3459 GBP

50p ordinary

Purchase

252

7.3500 GBP

50p ordinary

Purchase

249

7.3600 GBP

50p ordinary

Purchase

148

7.3400 GBP

50p ordinary

Purchase

86

7.4200 GBP

50p ordinary

Purchase

77

7.4100 GBP

50p ordinary

Purchase

75

7.3100 GBP

50p ordinary

Purchase

57

7.3900 GBP

50p ordinary

Purchase

42

7.4900 GBP

50p ordinary

Purchase

41

7.9500 GBP

50p ordinary

Purchase

40

7.6800 GBP

50p ordinary

Purchase

36

7.8000 GBP

50p ordinary

Purchase

33

7.3800 GBP

50p ordinary

Purchase

17

7.4050 GBP

50p ordinary

Purchase

15

7.4300 GBP

50p ordinary

Purchase

13

7.4000 GBP

50p ordinary

Purchase

13

7.8300 GBP

50p ordinary

Purchase

13

7.3700 GBP

50p ordinary

Purchase

13

7.3300 GBP

50p ordinary

Purchase

13

7.3000 GBP

50p ordinary

Purchase

13

7.8700 GBP

50p ordinary

Purchase

11

7.9000 GBP

50p ordinary

Purchase

6

7.3492 GBP

50p ordinary

Sale

28,078

7.5448 GBP

50p ordinary

Sale

13,790

7.9380 GBP

50p ordinary

Sale

6,908

7.9048 GBP

50p ordinary

Sale

4,719

7.5976 GBP

50p ordinary

Sale

3,161

7.4884 GBP

50p ordinary

Sale

2,909

7.4630 GBP

50p ordinary

Sale

2,475

7.3876 GBP

50p ordinary

Sale

2,183

7.4929 GBP

50p ordinary

Sale

1,951

7.3594 GBP

50p ordinary

Sale

1,592

7.3370 GBP

50p ordinary

Sale

1,540

8.0400 GBP

50p ordinary

Sale

1,504

7.7500 GBP

50p ordinary

Sale

1,476

7.4171 GBP

50p ordinary

Sale

1,304

7.5044 GBP

50p ordinary

Sale

1,253

7.4683 GBP

50p ordinary

Sale

1,026

7.4197 GBP

50p ordinary

Sale

892

7.7326 GBP

50p ordinary

Sale

874

7.3293 GBP

50p ordinary

Sale

856

7.5135 GBP

50p ordinary

Sale

438

7.6882 GBP

50p ordinary

Sale

425

7.7790 GBP

50p ordinary

Sale

408

7.4467 GBP

50p ordinary

Sale

351

7.3291 GBP

50p ordinary

Sale

318

7.7450 GBP

50p ordinary

Sale

293

7.3430 GBP

50p ordinary

Sale

288

7.3549 GBP

50p ordinary

Sale

258

7.5854 GBP

50p ordinary

Sale

258

7.3500 GBP

50p ordinary

Sale

249

7.3600 GBP

50p ordinary

Sale

184

7.3200 GBP

50p ordinary

Sale

179

7.6400 GBP

50p ordinary

Sale

158

7.7300 GBP

50p ordinary

Sale

148

7.3400 GBP

50p ordinary

Sale

86

7.4200 GBP

50p ordinary

Sale

85

7.3634 GBP

50p ordinary

Sale

77

7.4100 GBP

50p ordinary

Sale

75

7.3100 GBP

50p ordinary

Sale

57

7.3900 GBP

50p ordinary

Sale

50

7.3420 GBP

50p ordinary

Sale

42

7.4900 GBP

50p ordinary

Sale

41

7.9500 GBP

50p ordinary

Sale

40

7.6800 GBP

50p ordinary

Sale

36

7.8000 GBP

50p ordinary

Sale

35

7.4003 GBP

50p ordinary

Sale

33

7.3800 GBP

50p ordinary

Sale

17

7.4050 GBP

50p ordinary

Sale

15

7.4300 GBP

50p ordinary

Sale

13

7.3700 GBP

50p ordinary

Sale

13

7.3000 GBP

50p ordinary

Sale

13

7.8300 GBP

50p ordinary

Sale

13

7.3300 GBP

50p ordinary

Sale

13

7.4000 GBP

50p ordinary

Sale

13

7.8700 GBP

50p ordinary

Sale

11

7.9000 GBP

(b)

Cash-settled derivative transactions

Class of

Product

Nature of dealing

Number of

Price per

relevant

description

reference

unit

security

securities

50p ordinary

SWAP

Opening Long

18

7.3955 GBP

50p ordinary

SWAP

Increasing Long

1,026

7.4197 GBP

50p ordinary

SWAP

Increasing Long

408

7.4467 GBP

50p ordinary

SWAP

Increasing Long

119

7.4578 GBP

50p ordinary

SWAP

Increasing Long

47

7.4610 GBP

50p ordinary

SWAP

Increasing Long

4,560

7.5940 GBP

50p ordinary

SWAP

Increasing Long

20

7.6069 GBP

50p ordinary

SWAP

Increasing Long

35

7.6087 GBP

50p ordinary

SWAP

Increasing Long

102

7.6984 GBP

50p ordinary

SWAP

Increasing Long

40

7.7075 GBP

50p ordinary

SWAP

Increasing Long

141

7.7399 GBP

50p ordinary

SWAP

Increasing Long

10,355

7.9065 GBP

50p ordinary

SWAP

Increasing Long

3,833

8.0400 GBP

50p ordinary

SWAP

Decreasing Long

1,252

7.3782 GBP

50p ordinary

SWAP

Decreasing Long

934

7.4462 GBP

50p ordinary

SWAP

Decreasing Long

3,347

7.5471 GBP

50p ordinary

SWAP

Decreasing Long

4,115

7.5594 GBP

50p ordinary

SWAP

Decreasing Long

976

7.6362 GBP

50p ordinary

SWAP

Opening Short

12,719

7.8192 GBP

50p ordinary

SWAP

Increasing Short

426

7.9737 GBP

50p ordinary

SWAP

Increasing Short

634

8.0400 GBP

50p ordinary

SWAP

Increasing Short

1,050

8.0404 GBP

50p ordinary

CFD

Opening Long

1,021

7.4000 GBP

50p ordinary

CFD

Increasing Long

5,367

7.4870 GBP

50p ordinary

CFD

Increasing Long

1,977

7.6365 GBP

50p ordinary

CFD

Decreasing Long

2,660

7.3941 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)

Exercise

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:

15 Jan 2026

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213