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:

14 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:

2,418,034

1.57%

3,024,071

1.96%

(2)

Cash-settled derivatives:

2,356,453

1.53%

1,974,968

1.28%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

4,774,487

3.10%

4,999,039

3.25%

(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 PERSON MAKING THE DISCLOSURE

(a)

Purchases and sales

Class of relevant

Purchase/sale

Number of

Price per unit

security

securities

1p ordinary

Purchase

185,509

56.7500 GBP

1p ordinary

Purchase

89,000

56.5500 GBP

1p ordinary

Purchase

65,000

56.5895 GBP

1p ordinary

Purchase

61,521

56.3531 GBP

1p ordinary

Purchase

55,243

56.7419 GBP

1p ordinary

Purchase

49,515

56.7504 GBP

1p ordinary

Purchase

35,000

56.3611 GBP

1p ordinary

Purchase

31,027

56.2993 GBP

1p ordinary

Purchase

30,000

56.5113 GBP

1p ordinary

Purchase

30,000

56.2441 GBP

1p ordinary

Purchase

29,598

56.2241 GBP

1p ordinary

Purchase

22,828

56.7043 GBP

1p ordinary

Purchase

20,000

56.5107 GBP

1p ordinary

Purchase

17,754

56.7460 GBP

1p ordinary

Purchase

15,351

56.3500 GBP

1p ordinary

Purchase

13,129

56.4969 GBP

1p ordinary

Purchase

11,992

56.7510 GBP

1p ordinary

Purchase

10,000

56.4678 GBP

1p ordinary

Purchase

9,040

56.1930 GBP

1p ordinary

Purchase

8,673

56.2626 GBP

1p ordinary

Purchase

6,697

56.2286 GBP

1p ordinary

Purchase

5,701

56.2639 GBP

1p ordinary

Purchase

4,818

56.3739 GBP

1p ordinary

Purchase

3,935

56.4866 GBP

1p ordinary

Purchase

3,721

56.7238 GBP

1p ordinary

Purchase

3,644

56.1659 GBP

1p ordinary

Purchase

3,441

56.3556 GBP

1p ordinary

Purchase

2,303

56.4682 GBP

1p ordinary

Purchase

1,957

56.2701 GBP

1p ordinary

Purchase

1,957

56.2684 GBP

1p ordinary

Purchase

1,875

52.5300 GBP

1p ordinary

Purchase

1,798

56.3649 GBP

1p ordinary

Purchase

1,788

56.4966 GBP

1p ordinary

Purchase

1,584

56.2541 GBP

1p ordinary

Purchase

1,124

56.4261 GBP

1p ordinary

Purchase

1,005

56.4589 GBP

1p ordinary

Purchase

931

56.2899 GBP

1p ordinary

Purchase

852

56.4750 GBP

1p ordinary

Purchase

816

56.4870 GBP

1p ordinary

Purchase

671

56.3820 GBP

1p ordinary

Purchase

559

56.4940 GBP

1p ordinary

Purchase

537

56.2750 GBP

1p ordinary

Purchase

465

56.4296 GBP

1p ordinary

Purchase

447

56.3000 GBP

1p ordinary

Purchase

444

56.4022 GBP

1p ordinary

Purchase

434

56.2862 GBP

1p ordinary

Purchase

381

56.4780 GBP

1p ordinary

Purchase

297

56.2250 GBP

1p ordinary

Purchase

258

56.4804 GBP

1p ordinary

Purchase

253

56.3250 GBP

1p ordinary

Purchase

221

56.3705 GBP

1p ordinary

Purchase

203

56.4250 GBP

1p ordinary

Purchase

123

56.2239 GBP

ADR

Purchase

100

76.0900 USD

1p ordinary

Purchase

88

56.5915 GBP

1p ordinary

Purchase

84

56.4178 GBP

1p ordinary

Purchase

65

56.2544 GBP

1p ordinary

Purchase

61

56.3750 GBP

1p ordinary

Purchase

60

56.5000 GBP

1p ordinary

Purchase

58

56.4956 GBP

1p ordinary

Purchase

52

56.4562 GBP

1p ordinary

Purchase

47

56.4919 GBP

1p ordinary

Purchase

17

56.4500 GBP

1p ordinary

Purchase

16

56.3981 GBP

1p ordinary

Purchase

9

56.3511 GBP

1p ordinary

Purchase

8

56.5350 GBP

1p ordinary

Sale

327,834

56.4000 GBP

1p ordinary

Sale

227,608

56.6924 GBP

1p ordinary

Sale

136,322

56.7500 GBP

1p ordinary

Sale

95,242

56.2632 GBP

1p ordinary

Sale

50,905

56.2690 GBP

1p ordinary

Sale

43,801

56.3858 GBP

1p ordinary

Sale

19,387

56.4690 GBP

1p ordinary

Sale

15,527

56.4103 GBP

1p ordinary

Sale

10,522

56.3659 GBP

1p ordinary

Sale

8,876

56.3108 GBP

1p ordinary

Sale

8,438

56.7710 GBP

1p ordinary

Sale

7,691

56.7498 GBP

1p ordinary

Sale

6,512

56.3284 GBP

1p ordinary

Sale

6,240

56.7386 GBP

1p ordinary

Sale

5,235

56.4982 GBP

1p ordinary

Sale

3,483

56.3750 GBP

1p ordinary

Sale

2,739

56.3162 GBP

1p ordinary

Sale

2,176

56.3228 GBP

1p ordinary

Sale

2,028

56.3705 GBP

1p ordinary

Sale

1,957

56.2701 GBP

1p ordinary

Sale

1,452

56.2457 GBP

1p ordinary

Sale

1,296

56.4688 GBP

1p ordinary

Sale

932

56.4283 GBP

1p ordinary

Sale

852

56.4750 GBP

1p ordinary

Sale

838

56.3359 GBP

1p ordinary

Sale

577

56.3500 GBP

1p ordinary

Sale

540

56.3273 GBP

1p ordinary

Sale

413

56.3260 GBP

1p ordinary

Sale

406

56.4061 GBP

1p ordinary

Sale

355

56.5992 GBP

1p ordinary

Sale

328

56.5346 GBP

1p ordinary

Sale

261

56.3280 GBP

1p ordinary

Sale

257

56.5494 GBP

1p ordinary

Sale

191

56.3547 GBP

1p ordinary

Sale

182

56.7415 GBP

1p ordinary

Sale

156

56.3615 GBP

1p ordinary

Sale

155

56.4250 GBP

1p ordinary

Sale

118

56.6605 GBP

1p ordinary

Sale

102

56.2417 GBP

ADR

Sale

100

76.0900 USD

1p ordinary

Sale

75

56.4093 GBP

1p ordinary

Sale

67

56.4216 GBP

1p ordinary

Sale

60

56.0000 GBP

1p ordinary

Sale

59

56.4991 GBP

1p ordinary

Sale

56

56.7414 GBP

1p ordinary

Sale

49

56.6959 GBP

1p ordinary

Sale

42

56.3806 GBP

1p ordinary

Sale

30

56.5550 GBP

1p ordinary

Sale

8

56.5237 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

Decreasing Short

326,899

56.4000 GBP

1p ordinary

SWAP

Increasing Short

41,337

55.8334 GBP

1p ordinary

SWAP

Increasing Short

65,000

56.5895 GBP

1p ordinary

SWAP

Increasing Long

563

51.2697 GBP

1p ordinary

SWAP

Increasing Long

2,250

51.3705 GBP

1p ordinary

SWAP

Increasing Long

562

51.4297 GBP

1p ordinary

SWAP

Increasing Long

562

51.4723 GBP

1p ordinary

SWAP

Increasing Long

1,125

51.6063 GBP

1p ordinary

SWAP

Increasing Long

1,875

52.3238 GBP

1p ordinary

SWAP

Increasing Long

102

56.2416 GBP

1p ordinary

SWAP

Increasing Long

1,452

56.2457 GBP

1p ordinary

SWAP

Increasing Long

50,905

56.2690 GBP

1p ordinary

SWAP

Increasing Long

2,208

56.3056 GBP

1p ordinary

SWAP

Increasing Long

3,579

56.3097 GBP

1p ordinary

SWAP

Increasing Long

540

56.3273 GBP

1p ordinary

SWAP

Increasing Long

6,512

56.3284 GBP

1p ordinary

SWAP

Increasing Long

432

56.3332 GBP

1p ordinary

SWAP

Increasing Long

406

56.3388 GBP

1p ordinary

SWAP

Increasing Long

577

56.3500 GBP

1p ordinary

SWAP

Increasing Long

531

56.3601 GBP

1p ordinary

SWAP

Increasing Long

3,483

56.3750 GBP

1p ordinary

SWAP

Increasing Long

43,801

56.3858 GBP

1p ordinary

SWAP

Increasing Long

11,342

56.3960 GBP

1p ordinary

SWAP

Increasing Long

15,527

56.4103 GBP

1p ordinary

SWAP

Increasing Long

19,387

56.4690 GBP

1p ordinary

SWAP

Increasing Long

2,586

56.4847 GBP

1p ordinary

SWAP

Increasing Long

58

56.5051 GBP

1p ordinary

SWAP

Increasing Long

8

56.5238 GBP

1p ordinary

SWAP

Increasing Long

8

56.5450 GBP

1p ordinary

SWAP

Increasing Long

355

56.5992 GBP

1p ordinary

SWAP

Increasing Long

64

56.6406 GBP

1p ordinary

SWAP

Increasing Long

130

56.6411 GBP

1p ordinary

SWAP

Increasing Long

2,812

56.6716 GBP

1p ordinary

SWAP

Increasing Long

1,114

56.7385 USD

1p ordinary

SWAP

Increasing Long

6,240

56.7386 GBP

1p ordinary

SWAP

Increasing Long

238

56.7414 GBP

1p ordinary

SWAP

Increasing Long

58,713

56.7460 GBP

1p ordinary

SWAP

Increasing Long

163,996

56.7500 GBP

1p ordinary

SWAP

Increasing Long

5,626

56.8215 GBP

1p ordinary

SWAP

Decreasing Long

563

51.2697 GBP

1p ordinary

SWAP

Decreasing Long

2,250

51.3705 GBP

1p ordinary

SWAP

Decreasing Long

562

51.4297 GBP

1p ordinary

SWAP

Decreasing Long

562

51.4723 GBP

1p ordinary

SWAP

Decreasing Long

1,125

51.6063 GBP

1p ordinary

SWAP

Decreasing Long

1,753

52.2365 GBP

1p ordinary

SWAP

Decreasing Long

876

52.2598 GBP

1p ordinary

SWAP

Decreasing Long

1,875

52.5305 GBP

1p ordinary

SWAP

Decreasing Long

187

53.1106 GBP

1p ordinary

SWAP

Decreasing Long

212

56.0000 GBP

1p ordinary

SWAP

Decreasing Long

2,420

56.0042 GBP

1p ordinary

SWAP

Decreasing Long

7,580

56.0964 GBP

1p ordinary

SWAP

Decreasing Long

3,644

56.1659 GBP

1p ordinary

SWAP

Decreasing Long

30,000

56.2441 GBP

1p ordinary

SWAP

Decreasing Long

65

56.2545 GBP

1p ordinary

SWAP

Decreasing Long

153

56.2991 GBP

1p ordinary

SWAP

Decreasing Long

15,351

56.3500 GBP

1p ordinary

SWAP

Decreasing Long

9

56.3505 GBP

1p ordinary

SWAP

Decreasing Long

300

56.3525 GBP

1p ordinary

SWAP

Decreasing Long

61,521

56.3531 GBP

1p ordinary

SWAP

Decreasing Long

35,000

56.3611 GBP

1p ordinary

SWAP

Decreasing Long

1,618

56.3643 GBP

1p ordinary

SWAP

Decreasing Long

4,818

56.3739 GBP

1p ordinary

SWAP

Decreasing Long

19

56.3806 GBP

1p ordinary

SWAP

Decreasing Long

16

56.3978 GBP

1p ordinary

SWAP

Decreasing Long

97

56.3994 GBP

1p ordinary

SWAP

Decreasing Long

465

56.4296 GBP

1p ordinary

SWAP

Decreasing Long

3,586

56.4305 GBP

1p ordinary

SWAP

Decreasing Long

17

56.4500 GBP

1p ordinary

SWAP

Decreasing Long

1,265

56.4545 GBP

1p ordinary

SWAP

Decreasing Long

3,281

56.4554 GBP

1p ordinary

SWAP

Decreasing Long

10,000

56.4678 GBP

1p ordinary

SWAP

Decreasing Long

21

56.4757 GBP

1p ordinary

SWAP

Decreasing Long

6,561

56.4806 GBP

1p ordinary

SWAP

Decreasing Long

3,935

56.4866 GBP

1p ordinary

SWAP

Decreasing Long

47

56.4920 GBP

1p ordinary

SWAP

Decreasing Long

144

56.5056 GBP

1p ordinary

SWAP

Decreasing Long

20,000

56.5107 GBP

1p ordinary

SWAP

Decreasing Long

30,000

56.5113 GBP

1p ordinary

SWAP

Decreasing Long

11,511

56.5156 GBP

1p ordinary

SWAP

Decreasing Long

1

56.5283 GBP

1p ordinary

SWAP

Decreasing Long

3

56.5284 GBP

1p ordinary

SWAP

Decreasing Long

161

56.5292 GBP

1p ordinary

SWAP

Decreasing Long

68

56.5313 GBP

1p ordinary

SWAP

Decreasing Long

8

56.5330 GBP

1p ordinary

SWAP

Decreasing Long

89,000

56.5500 GBP

1p ordinary

SWAP

Decreasing Long

150

56.5850 GBP

1p ordinary

SWAP

Decreasing Long

84

56.5946 GBP

1p ordinary

SWAP

Decreasing Long

1,460

56.6947 GBP

1p ordinary

SWAP

Decreasing Long

3,721

56.7238 GBP

1p ordinary

SWAP

Decreasing Long

7,462

56.7421 GBP

1p ordinary

SWAP

Decreasing Long

111,807

56.7500 GBP

1p ordinary

SWAP

Decreasing Long

49,515

56.7504 GBP

1p ordinary

SWAP

Decreasing Long

11,992

56.7510 GBP

1p ordinary

CFD

Increasing Long

551

56.4551 GBP

1p ordinary

CFD

Increasing Long

20

56.4985 GBP

1p ordinary

CFD

Decreasing Long

124

56.1016 GBP

1p ordinary

CFD

Decreasing Long

188

56.3534 GBP

1p ordinary

CFD

Decreasing Long

1,742

56.7539 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 May 2026

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213