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:

22 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:

2,774,618

1.80%

2,373,645

1.54%

(2)

Cash-settled derivatives:

1,920,391

1.25%

2,387,870

1.55%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

4,695,009

3.05%

4,761,515

3.09%

(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

63,402

54.8000 GBP

1p ordinary

Purchase

47,143

54.8208 GBP

1p ordinary

Purchase

31,242

54.8009 GBP

1p ordinary

Purchase

20,345

54.8762 GBP

1p ordinary

Purchase

11,000

54.9799 GBP

1p ordinary

Purchase

8,345

55.0496 GBP

1p ordinary

Purchase

7,176

55.0793 GBP

1p ordinary

Purchase

4,540

54.9215 GBP

1p ordinary

Purchase

1,542

54.8734 GBP

1p ordinary

Purchase

1,406

54.8270 GBP

1p ordinary

Purchase

1,044

55.1002 GBP

1p ordinary

Purchase

891

54.9219 GBP

1p ordinary

Purchase

577

55.1500 GBP

1p ordinary

Purchase

450

55.0993 GBP

1p ordinary

Purchase

356

54.9718 GBP

1p ordinary

Purchase

250

55.0750 GBP

1p ordinary

Purchase

208

55.0841 GBP

ADR

Purchase

200

73.9800 USD

1p ordinary

Purchase

183

55.1000 GBP

1p ordinary

Purchase

170

55.0647 GBP

1p ordinary

Purchase

162

55.0000 GBP

1p ordinary

Purchase

127

55.1250 GBP

1p ordinary

Purchase

107

55.0738 GBP

ADR

Purchase

100

73.7400 USD

1p ordinary

Purchase

64

54.9500 GBP

1p ordinary

Purchase

55

54.9572 GBP

1p ordinary

Purchase

29

54.9620 GBP

1p ordinary

Sale

472,113

55.0000 GBP

1p ordinary

Sale

109,766

54.8000 GBP

1p ordinary

Sale

16,717

54.8576 GBP

1p ordinary

Sale

11,349

54.9912 GBP

1p ordinary

Sale

8,969

54.9527 GBP

1p ordinary

Sale

8,600

54.8853 GBP

1p ordinary

Sale

7,716

54.9250 GBP

1p ordinary

Sale

5,775

54.9605 GBP

1p ordinary

Sale

5,000

54.8958 GBP

1p ordinary

Sale

4,484

54.9750 GBP

1p ordinary

Sale

3,232

55.0698 GBP

1p ordinary

Sale

2,470

55.1803 GBP

1p ordinary

Sale

2,352

54.9827 GBP

1p ordinary

Sale

2,276

55.0362 GBP

1p ordinary

Sale

2,192

54.8654 GBP

1p ordinary

Sale

2,095

54.8808 GBP

1p ordinary

Sale

2,082

54.9292 GBP

1p ordinary

Sale

1,922

54.9076 GBP

1p ordinary

Sale

1,523

54.8004 GBP

1p ordinary

Sale

1,444

54.9356 GBP

1p ordinary

Sale

1,201

54.9252 GBP

1p ordinary

Sale

1,194

54.7989 GBP

1p ordinary

Sale

1,148

54.9854 GBP

1p ordinary

Sale

1,138

54.9280 GBP

1p ordinary

Sale

891

54.9236 GBP

1p ordinary

Sale

738

54.9406 GBP

1p ordinary

Sale

658

54.9036 GBP

1p ordinary

Sale

434

54.9056 GBP

1p ordinary

Sale

394

54.9678 GBP

1p ordinary

Sale

377

54.8704 GBP

1p ordinary

Sale

330

54.9944 GBP

1p ordinary

Sale

326

54.9000 GBP

1p ordinary

Sale

281

55.0672 GBP

1p ordinary

Sale

279

55.1500 GBP

ADR

Sale

200

73.9800 USD

1p ordinary

Sale

161

55.0034 GBP

1p ordinary

Sale

136

55.0275 GBP

1p ordinary

Sale

127

55.2500 GBP

1p ordinary

Sale

115

54.9556 GBP

1p ordinary

Sale

114

54.9447 GBP

1p ordinary

Sale

102

54.9500 GBP

ADR

Sale

100

73.7400 USD

1p ordinary

Sale

67

55.0208 GBP

1p ordinary

Sale

57

54.8109 GBP

1p ordinary

Sale

28

55.0196 GBP

1p ordinary

Sale

26

54.9670 GBP

1p ordinary

Sale

16

54.9775 GBP

1p ordinary

Sale

11

55.1954 GBP

1p ordinary

Sale

9

55.0500 GBP

1p ordinary

Sale

9

55.1000 GBP

1p ordinary

Sale

2

55.0055 GBP

1p ordinary

Sale

1

54.9054 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 Long

1,406

54.7889 USD

1p ordinary

SWAP

Increasing Long

1,194

54.7989 GBP

1p ordinary

SWAP

Increasing Long

74,297

54.8000 GBP

1p ordinary

SWAP

Increasing Long

1,523

54.8004 GBP

1p ordinary

SWAP

Increasing Long

1,341

54.8612 GBP

1p ordinary

SWAP

Increasing Long

377

54.8704 GBP

1p ordinary

SWAP

Increasing Long

1,424

54.8748 GBP

1p ordinary

SWAP

Increasing Long

461

54.8750 GBP

1p ordinary

SWAP

Increasing Long

1

54.8800 GBP

1p ordinary

SWAP

Increasing Long

10

54.8830 GBP

1p ordinary

SWAP

Increasing Long

21

54.8833 GBP

1p ordinary

SWAP

Increasing Long

8,600

54.8853 GBP

1p ordinary

SWAP

Increasing Long

470

54.8929 GBP

1p ordinary

SWAP

Increasing Long

5,000

54.8958 GBP

1p ordinary

SWAP

Increasing Long

434

54.9056 GBP

1p ordinary

SWAP

Increasing Long

12,131

54.9250 GBP

1p ordinary

SWAP

Increasing Long

1,138

54.9280 GBP

1p ordinary

SWAP

Increasing Long

5,775

54.9605 GBP

1p ordinary

SWAP

Increasing Long

16

54.9773 GBP

1p ordinary

SWAP

Increasing Long

7,427

54.9832 GBP

1p ordinary

SWAP

Increasing Long

1,145

54.9853 GBP

1p ordinary

SWAP

Increasing Long

11,349

54.9912 GBP

1p ordinary

SWAP

Increasing Long

329

54.9944 GBP

1p ordinary

SWAP

Increasing Long

1

54.9994 GBP

1p ordinary

SWAP

Increasing Long

333

55.0000 GBP

1p ordinary

SWAP

Increasing Long

3

55.0054 GBP

1p ordinary

SWAP

Increasing Long

28

55.0194 GBP

1p ordinary

SWAP

Increasing Long

2,276

55.0362 GBP

1p ordinary

SWAP

Increasing Long

277

55.0500 GBP

1p ordinary

SWAP

Increasing Long

281

55.0672 GBP

1p ordinary

SWAP

Increasing Long

15

55.1250 GBP

1p ordinary

SWAP

Increasing Long

228

55.1500 GBP

1p ordinary

SWAP

Increasing Long

2,470

55.1803 GBP

1p ordinary

SWAP

Increasing Long

11

55.1955 GBP

1p ordinary

SWAP

Decreasing Long

44,223

54.8000 GBP

1p ordinary

SWAP

Decreasing Long

28,825

54.8027 GBP

1p ordinary

SWAP

Decreasing Long

21,805

54.8060 GBP

1p ordinary

SWAP

Decreasing Long

6,088

54.8166 GBP

1p ordinary

SWAP

Decreasing Long

1,406

54.8774 GBP

1p ordinary

SWAP

Decreasing Long

57

54.9005 GBP

1p ordinary

SWAP

Decreasing Long

4,415

54.9250 GBP

1p ordinary

SWAP

Decreasing Long

6,286

54.9343 GBP

1p ordinary

SWAP

Decreasing Long

356

54.9718 GBP

1p ordinary

SWAP

Decreasing Long

101

54.9737 GBP

1p ordinary

SWAP

Decreasing Long

11,000

54.9799 GBP

1p ordinary

SWAP

Decreasing Long

333

55.0000 GBP

1p ordinary

SWAP

Decreasing Long

8,345

55.0496 GBP

1p ordinary

SWAP

Decreasing Long

1,406

55.0610 GBP

1p ordinary

SWAP

Decreasing Long

250

55.0750 GBP

1p ordinary

SWAP

Decreasing Long

7,176

55.0793 GBP

1p ordinary

SWAP

Decreasing Long

450

55.0993 GBP

1p ordinary

SWAP

Decreasing Long

15

55.1250 GBP

1p ordinary

SWAP

Decreasing Long

577

55.1500 GBP

1p ordinary

SWAP

Decreasing Long

84

55.1544 GBP

1p ordinary

CFD

Decreasing Short

522

54.7961 GBP

1p ordinary

CFD

Decreasing Short

10

54.8960 GBP

1p ordinary

CFD

Decreasing Short

90

54.8961 GBP

1p ordinary

CFD

Decreasing Short

7,871

54.9272 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:

26 May 2026

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213