Form 8.3 TRITAX BIG BOX REIT 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

TRITAX BIG BOX REIT 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:

19 Aug 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?

WAREHOUSE REIT 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:

1p ordinary

Interests

Short Positions

Number

(%)

Number

(%)

(1)

Relevant securities owned

and/or controlled:

14,369,229

0.58%

14,229,579

0.57%

(2)

Cash-settled derivatives:

12,688,757

0.51%

13,191,464

0.53%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

27,057,986

1.09%

27,421,043

1.11%

(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

362,319

1.3763 GBP

1p ordinary

Purchase

295,069

1.3800 GBP

1p ordinary

Purchase

121,744

1.3791 GBP

1p ordinary

Purchase

59,958

1.3710 GBP

1p ordinary

Purchase

39,956

1.3780 GBP

1p ordinary

Purchase

35,800

1.3797 GBP

1p ordinary

Purchase

29,602

1.3752 GBP

1p ordinary

Purchase

8,677

1.3776 GBP

1p ordinary

Purchase

6,658

1.3770 GBP

1p ordinary

Purchase

3,526

1.3765 GBP

1p ordinary

Purchase

1,667

1.3782 GBP

1p ordinary

Purchase

1,460

1.3810 GBP

1p ordinary

Purchase

479

1.3720 GBP

1p ordinary

Purchase

466

1.3830 GBP

1p ordinary

Purchase

401

1.3790 GBP

1p ordinary

Purchase

383

1.3820 GBP

1p ordinary

Purchase

264

1.3740 GBP

1p ordinary

Purchase

160

1.3806 GBP

1p ordinary

Sale

554,013

1.3725 GBP

1p ordinary

Sale

230,084

1.3760 GBP

1p ordinary

Sale

186,091

1.3736 GBP

1p ordinary

Sale

183,239

1.3800 GBP

1p ordinary

Sale

137,883

1.3795 GBP

1p ordinary

Sale

104,838

1.3783 GBP

1p ordinary

Sale

90,668

1.3767 GBP

1p ordinary

Sale

76,149

1.3799 GBP

1p ordinary

Sale

69,473

1.3810 GBP

1p ordinary

Sale

27,576

1.3798 GBP

1p ordinary

Sale

24,587

1.3792 GBP

1p ordinary

Sale

23,183

1.3748 GBP

1p ordinary

Sale

18,000

1.3780 GBP

1p ordinary

Sale

9,623

1.3808 GBP

1p ordinary

Sale

9,524

1.3730 GBP

1p ordinary

Sale

8,989

1.3741 GBP

1p ordinary

Sale

8,118

1.3770 GBP

1p ordinary

Sale

6,497

1.3828 GBP

1p ordinary

Sale

6,260

1.3729 GBP

1p ordinary

Sale

5,423

1.3822 GBP

1p ordinary

Sale

3,802

1.3805 GBP

1p ordinary

Sale

2,489

1.3745 GBP

1p ordinary

Sale

2,097

1.3780 GBP

1p ordinary

Sale

1,218

1.3796 GBP

1p ordinary

Sale

1,209

1.3750 GBP

1p ordinary

Sale

466

1.3830 GBP

1p ordinary

Sale

444

1.3829 GBP

1p ordinary

Sale

401

1.3790 GBP

1p ordinary

Sale

383

1.3820 GBP

1p ordinary

Sale

264

1.3740 GBP

1p ordinary

Sale

219

1.3818 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

554,013

1.3725 GBP

1p ordinary

SWAP

Decreasing Short

131

1.3738 GBP

1p ordinary

SWAP

Decreasing Short

4,418

1.3750 GBP

1p ordinary

SWAP

Decreasing Short

6,717

1.3763 GBP

1p ordinary

SWAP

Decreasing Short

3,690

1.3765 GBP

1p ordinary

SWAP

Decreasing Short

2,496

1.3773 GBP

1p ordinary

SWAP

Decreasing Short

1,112

1.3785 GBP

1p ordinary

SWAP

Decreasing Short

13,222

1.3797 GBP

1p ordinary

SWAP

Decreasing Short

27,576

1.3798 GBP

1p ordinary

SWAP

Decreasing Short

76,149

1.3799 GBP

1p ordinary

SWAP

Opening Long

186,903

1.3800 GBP

1p ordinary

SWAP

Increasing Long

11,730

1.3802 GBP

1p ordinary

SWAP

Increasing Long

3,802

1.3805 GBP

1p ordinary

SWAP

Increasing Long

9,650

1.3806 GBP

1p ordinary

SWAP

Increasing Long

9,623

1.3808 GBP

1p ordinary

SWAP

Increasing Long

219

1.3818 GBP

1p ordinary

SWAP

Increasing Long

5,423

1.3822 GBP

1p ordinary

SWAP

Increasing Long

6,497

1.3828 GBP

1p ordinary

SWAP

Increasing Long

444

1.3829 GBP

1p ordinary

SWAP

Decreasing Long

3,526

1.3765 GBP

1p ordinary

SWAP

Decreasing Long

1,167

1.3770 GBP

1p ordinary

SWAP

Decreasing Long

8,677

1.3776 GBP

1p ordinary

SWAP

Decreasing Long

1,860

1.3780 GBP

1p ordinary

SWAP

Decreasing Long

5,390

1.3786 GBP

1p ordinary

SWAP

Decreasing Long

5,037

1.3792 GBP

1p ordinary

SWAP

Decreasing Long

49,406

1.3800 GBP

1p ordinary

SWAP

Decreasing Long

160

1.3806 GBP

1p ordinary

SWAP

Decreasing Long

500

1.3811 GBP

1p ordinary

CFD

Decreasing Short

6,358

1.3736 GBP

1p ordinary

CFD

Increasing Short

26,630

1.3801 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:

20 Aug 2025

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213