Form 8.3 INTERTEK GROUP 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

INTERTEK GROUP 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:

06 May 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:

1p ordinary

Interests

Short Positions

Number

(%)

Number

(%)

(1)

Relevant securities owned

and/or controlled:

1,608,408

1.04%

2,253,627

1.46%

(2)

Cash-settled derivatives:

1,575,050

1.02%

1,108,472

0.72%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

3,183,458

2.07%

3,362,099

2.18%

(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

1p ordinary

Purchase

97,941

51.0600 GBP

1p ordinary

Purchase

50,497

51.0657 GBP

1p ordinary

Purchase

50,000

51.3323 GBP

1p ordinary

Purchase

15,133

51.2729 GBP

1p ordinary

Purchase

14,921

51.1060 GBP

1p ordinary

Purchase

12,907

51.5152 GBP

1p ordinary

Purchase

10,000

51.5761 GBP

1p ordinary

Purchase

9,839

51.0743 GBP

1p ordinary

Purchase

6,749

51.4550 GBP

1p ordinary

Purchase

5,051

51.1989 GBP

1p ordinary

Purchase

3,193

51.2787 GBP

1p ordinary

Purchase

2,312

51.5000 GBP

1p ordinary

Purchase

2,165

51.2035 GBP

1p ordinary

Purchase

1,383

51.3988 GBP

ADR

Purchase

1,310

70.0629 USD

1p ordinary

Purchase

1,138

51.4876 GBP

1p ordinary

Purchase

1,068

51.3403 GBP

1p ordinary

Purchase

977

51.0651 GBP

ADR

Purchase

940

70.0574 USD

1p ordinary

Purchase

915

51.2928 GBP

1p ordinary

Purchase

723

51.3687 GBP

1p ordinary

Purchase

711

51.2776 GBP

1p ordinary

Purchase

621

51.4221 GBP

1p ordinary

Purchase

599

51.3555 GBP

1p ordinary

Purchase

563

50.9530 GBP

1p ordinary

Purchase

563

51.0300 GBP

1p ordinary

Purchase

563

50.9760 GBP

1p ordinary

Purchase

562

51.1170 GBP

1p ordinary

Purchase

562

51.1000 GBP

1p ordinary

Purchase

562

51.0160 GBP

1p ordinary

Purchase

562

51.3770 GBP

1p ordinary

Purchase

540

51.2995 GBP

1p ordinary

Purchase

531

51.4301 GBP

1p ordinary

Purchase

412

51.4075 GBP

1p ordinary

Purchase

404

51.4003 GBP

1p ordinary

Purchase

363

51.3600 GBP

1p ordinary

Purchase

363

51.3000 GBP

1p ordinary

Purchase

362

51.2781 GBP

1p ordinary

Purchase

298

51.3958 GBP

1p ordinary

Purchase

298

51.3663 GBP

1p ordinary

Purchase

287

51.2800 GBP

1p ordinary

Purchase

226

51.4490 GBP

1p ordinary

Purchase

215

51.2539 GBP

1p ordinary

Purchase

197

51.4731 GBP

1p ordinary

Purchase

188

51.2000 GBP

1p ordinary

Purchase

145

51.5355 GBP

1p ordinary

Purchase

144

51.2600 GBP

1p ordinary

Purchase

135

51.4200 GBP

1p ordinary

Purchase

133

51.4545 GBP

1p ordinary

Purchase

124

51.3288 GBP

1p ordinary

Purchase

119

51.2984 GBP

1p ordinary

Purchase

119

51.2983 GBP

1p ordinary

Purchase

115

51.2400 GBP

1p ordinary

Purchase

114

51.3096 GBP

1p ordinary

Purchase

112

51.4592 GBP

1p ordinary

Purchase

102

51.3066 GBP

1p ordinary

Purchase

99

51.6500 GBP

1p ordinary

Purchase

99

51.4361 GBP

1p ordinary

Purchase

97

51.5800 GBP

1p ordinary

Purchase

77

51.3192 GBP

1p ordinary

Purchase

70

51.4800 GBP

1p ordinary

Purchase

58

51.3800 GBP

1p ordinary

Purchase

54

51.2200 GBP

1p ordinary

Purchase

49

51.4100 GBP

1p ordinary

Purchase

45

51.3400 GBP

1p ordinary

Purchase

42

51.3790 GBP

1p ordinary

Purchase

39

51.3200 GBP

1p ordinary

Purchase

28

51.1900 GBP

1p ordinary

Purchase

24

51.2500 GBP

1p ordinary

Purchase

15

51.2700 GBP

1p ordinary

Purchase

14

51.3300 GBP

1p ordinary

Purchase

1

51.3250 GBP

1p ordinary

Sale

92,695

51.1458 GBP

1p ordinary

Sale

74,601

51.0600 GBP

1p ordinary

Sale

37,441

51.4826 GBP

1p ordinary

Sale

22,528

51.0602 GBP

1p ordinary

Sale

14,979

51.3934 GBP

1p ordinary

Sale

14,364

51.3970 GBP

1p ordinary

Sale

10,611

51.0523 GBP

1p ordinary

Sale

7,216

51.1747 GBP

1p ordinary

Sale

6,073

51.2154 GBP

1p ordinary

Sale

5,768

51.1289 GBP

1p ordinary

Sale

5,503

51.3760 GBP

1p ordinary

Sale

4,342

51.3507 GBP

1p ordinary

Sale

3,638

51.3785 GBP

1p ordinary

Sale

3,475

51.3865 GBP

1p ordinary

Sale

3,375

51.0340 GBP

1p ordinary

Sale

3,119

51.0498 GBP

1p ordinary

Sale

2,879

51.4069 GBP

1p ordinary

Sale

2,812

52.0890 GBP

1p ordinary

Sale

2,272

51.4927 GBP

1p ordinary

Sale

1,621

51.0564 GBP

1p ordinary

Sale

1,343

51.4912 GBP

1p ordinary

Sale

1,221

51.2203 GBP

1p ordinary

Sale

1,190

51.4917 GBP

ADR

Sale

1,110

70.1216 USD

ADR

Sale

940

70.0574 USD

1p ordinary

Sale

911

51.3864 GBP

1p ordinary

Sale

609

51.0841 GBP

1p ordinary

Sale

596

51.2982 GBP

1p ordinary

Sale

554

51.3993 GBP

1p ordinary

Sale

529

51.2002 GBP

1p ordinary

Sale

495

51.4783 GBP

1p ordinary

Sale

441

51.4276 GBP

1p ordinary

Sale

363

51.3000 GBP

1p ordinary

Sale

363

51.1731 GBP

1p ordinary

Sale

357

51.2000 GBP

1p ordinary

Sale

304

51.0777 GBP

1p ordinary

Sale

292

51.4230 GBP

1p ordinary

Sale

282

51.4434 GBP

1p ordinary

Sale

227

51.4128 GBP

1p ordinary

Sale

224

51.2800 GBP

ADR

Sale

200

69.7374 USD

1p ordinary

Sale

196

51.2418 GBP

1p ordinary

Sale

185

51.4126 GBP

1p ordinary

Sale

144

51.2600 GBP

1p ordinary

Sale

116

51.3379 GBP

1p ordinary

Sale

115

51.2400 GBP

1p ordinary

Sale

110

51.0741 GBP

1p ordinary

Sale

105

51.4100 GBP

1p ordinary

Sale

100

51.4000 GBP

1p ordinary

Sale

97

51.4500 GBP

1p ordinary

Sale

63

51.3600 GBP

1p ordinary

Sale

54

51.2200 GBP

1p ordinary

Sale

47

51.3800 GBP

1p ordinary

Sale

45

51.3400 GBP

1p ordinary

Sale

28

51.1900 GBP

1p ordinary

Sale

24

51.2500 GBP

1p ordinary

Sale

21

51.4800 GBP

1p ordinary

Sale

15

51.2700 GBP

1p ordinary

Sale

14

51.3300 GBP

(b)

Cash-settled derivative transactions

Class of

Product

Nature of dealing

Number of

Price per

relevant

description

reference

unit

security

securities

1p ordinary

SWAP

Increasing Short

50,000

51.3323 GBP

1p ordinary

SWAP

Increasing Long

3,375

51.0344 GBP

1p ordinary

SWAP

Increasing Long

3,119

51.0497 GBP

1p ordinary

SWAP

Increasing Long

10,611

51.0523 GBP

1p ordinary

SWAP

Increasing Long

1,621

51.0564 GBP

1p ordinary

SWAP

Increasing Long

21,511

51.0574 GBP

1p ordinary

SWAP

Increasing Long

70,320

51.0600 GBP

1p ordinary

SWAP

Increasing Long

609

51.0841 GBP

1p ordinary

SWAP

Increasing Long

119

51.1006 GBP

1p ordinary

SWAP

Increasing Long

331

51.1044 GBP

1p ordinary

SWAP

Increasing Long

363

51.1731 GBP

1p ordinary

SWAP

Increasing Long

518

51.1996 GBP

1p ordinary

SWAP

Increasing Long

1,221

51.2202 GBP

1p ordinary

SWAP

Increasing Long

11

51.2286 GBP

1p ordinary

SWAP

Increasing Long

196

51.2418 GBP

1p ordinary

SWAP

Increasing Long

118

51.3057 GBP

1p ordinary

SWAP

Increasing Long

4,342

51.3507 GBP

1p ordinary

SWAP

Increasing Long

2,888

51.3605 GBP

1p ordinary

SWAP

Increasing Long

4,556

51.3760 GBP

1p ordinary

SWAP

Increasing Long

1,655

51.3842 GBP

1p ordinary

SWAP

Increasing Long

14,979

51.3934 GBP

1p ordinary

SWAP

Increasing Long

14,364

51.3970 GBP

1p ordinary

SWAP

Increasing Long

441

51.4276 GBP

1p ordinary

SWAP

Increasing Long

612

51.4659 GBP

1p ordinary

SWAP

Increasing Long

37,441

51.4826 GBP

1p ordinary

SWAP

Increasing Long

14

51.5400 GBP

1p ordinary

SWAP

Increasing Long

2,812

52.0895 GBP

1p ordinary

SWAP

Decreasing Long

563

50.9530 GBP

1p ordinary

SWAP

Decreasing Long

563

50.9755 GBP

1p ordinary

SWAP

Decreasing Long

562

51.0160 GBP

1p ordinary

SWAP

Decreasing Long

563

51.0301 GBP

1p ordinary

SWAP

Decreasing Long

52,710

51.0600 GBP

1p ordinary

SWAP

Decreasing Long

563

51.0602 GBP

1p ordinary

SWAP

Decreasing Long

977

51.0651 GBP

1p ordinary

SWAP

Decreasing Long

6,646

51.0705 GBP

1p ordinary

SWAP

Decreasing Long

562

51.1004 GBP

1p ordinary

SWAP

Decreasing Long

562

51.1175 GBP

1p ordinary

SWAP

Decreasing Long

5,051

51.1989 GBP

1p ordinary

SWAP

Decreasing Long

1,118

51.2028 GBP

1p ordinary

SWAP

Decreasing Long

2,165

51.2035 GBP

1p ordinary

SWAP

Decreasing Long

452

51.2072 GBP

1p ordinary

SWAP

Decreasing Long

77

51.3192 GBP

1p ordinary

SWAP

Decreasing Long

1,068

51.3403 GBP

1p ordinary

SWAP

Decreasing Long

599

51.3555 GBP

1p ordinary

SWAP

Decreasing Long

562

51.3774 GBP

1p ordinary

SWAP

Decreasing Long

1,383

51.3988 GBP

1p ordinary

SWAP

Decreasing Long

404

51.4003 GBP

1p ordinary

SWAP

Decreasing Long

135

51.4200 GBP

1p ordinary

SWAP

Decreasing Long

535

51.4258 GBP

1p ordinary

SWAP

Decreasing Long

133

51.4305 GBP

1p ordinary

SWAP

Decreasing Long

6,749

51.4552 GBP

1p ordinary

SWAP

Decreasing Long

866

51.4597 GBP

1p ordinary

SWAP

Decreasing Long

12,907

51.5152 GBP

1p ordinary

SWAP

Decreasing Long

145

51.5355 GBP

1p ordinary

SWAP

Decreasing Long

10,000

51.5761 GBP

1p ordinary

CFD

Increasing Long

5,574

51.2154 GBP

1p ordinary

CFD

Increasing Long

499

51.2155 GBP

1p ordinary

CFD

Increasing Long

640

51.3961 GBP

1p ordinary

CFD

Increasing Long

426

51.4810 GBP

1p ordinary

CFD

Decreasing Long

26

51.0634 GBP

1p ordinary

CFD

Decreasing Long

395

51.2454 GBP

1p ordinary

CFD

Decreasing Long

688

51.3232 GBP

1p ordinary

CFD

Decreasing Long

422

51.3493 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:

07 May 2026

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213