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:

18 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:

14,516,917

0.59%

13,552,646

0.55%

(2)

Cash-settled derivatives:

12,014,477

0.48%

13,345,004

0.54%

(3)

Stock-settled derivatives (including options)

and agreements to purchase/sell:

0

0.00%

0

0.00%

TOTAL:

26,531,394

1.07%

26,897,650

1.08%

(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

357,650

1.3700 GBP

1p ordinary

Purchase

73,121

1.3741 GBP

1p ordinary

Purchase

70,427

1.3720 GBP

1p ordinary

Purchase

60,518

1.3710 GBP

1p ordinary

Purchase

59,828

1.3690 GBP

1p ordinary

Purchase

58,479

1.3717 GBP

1p ordinary

Purchase

40,253

1.3732 GBP

1p ordinary

Purchase

22,736

1.3727 GBP

1p ordinary

Purchase

12,434

1.3851 GBP

1p ordinary

Purchase

9,492

1.3730 GBP

1p ordinary

Purchase

4,190

1.3776 GBP

1p ordinary

Purchase

4,021

1.3880 GBP

1p ordinary

Purchase

3,904

1.3840 GBP

1p ordinary

Purchase

1,710

1.3701 GBP

1p ordinary

Purchase

1,675

1.3818 GBP

1p ordinary

Purchase

1,077

1.3810 GBP

1p ordinary

Purchase

743

1.3870 GBP

1p ordinary

Purchase

688

1.3800 GBP

1p ordinary

Purchase

504

1.3705 GBP

1p ordinary

Purchase

433

1.3865 GBP

1p ordinary

Purchase

375

1.3780 GBP

1p ordinary

Purchase

132

1.3860 GBP

1p ordinary

Purchase

88

1.3739 GBP

1p ordinary

Purchase

6

1.3660 GBP

1p ordinary

Purchase

6

1.3670 GBP

1p ordinary

Purchase

2

1.3680 GBP

1p ordinary

Sale

641,300

1.3875 GBP

1p ordinary

Sale

178,656

1.3775 GBP

1p ordinary

Sale

136,886

1.3700 GBP

1p ordinary

Sale

94,627

1.3747 GBP

1p ordinary

Sale

86,290

1.3697 GBP

1p ordinary

Sale

54,925

1.3699 GBP

1p ordinary

Sale

32,426

1.3831 GBP

1p ordinary

Sale

22,269

1.3733 GBP

1p ordinary

Sale

18,891

1.3710 GBP

1p ordinary

Sale

11,858

1.3680 GBP

1p ordinary

Sale

10,181

1.3815 GBP

1p ordinary

Sale

2,385

1.3811 GBP

1p ordinary

Sale

2,000

1.3828 GBP

1p ordinary

Sale

1,932

1.3860 GBP

1p ordinary

Sale

1,209

1.3813 GBP

1p ordinary

Sale

504

1.3705 GBP

1p ordinary

Sale

495

1.3690 GBP

1p ordinary

Sale

286

1.3880 GBP

1p ordinary

Sale

145

1.3870 GBP

1p ordinary

Sale

6

1.3670 GBP

1p ordinary

Sale

6

1.3660 GBP

1p ordinary

Sale

3

1.3840 GBP

1p ordinary

Sale

2

1.3730 GBP

1p ordinary

Sale

2

1.3780 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

1,131

1.3677 GBP

1p ordinary

SWAP

Decreasing Short

10,047

1.3680 GBP

1p ordinary

SWAP

Decreasing Short

678

1.3685 GBP

1p ordinary

SWAP

Decreasing Short

86,290

1.3697 GBP

1p ordinary

SWAP

Decreasing Short

54,925

1.3699 GBP

1p ordinary

SWAP

Decreasing Short

71,696

1.3700 GBP

1p ordinary

SWAP

Decreasing Short

19,801

1.3710 GBP

1p ordinary

SWAP

Decreasing Short

18,925

1.3734 GBP

1p ordinary

SWAP

Decreasing Short

2,432

1.3741 GBP

1p ordinary

SWAP

Decreasing Short

1,033

1.3745 GBP

1p ordinary

SWAP

Decreasing Short

1,912

1.3747 GBP

1p ordinary

SWAP

Decreasing Short

9,763

1.3765 GBP

1p ordinary

SWAP

Decreasing Short

310

1.3774 GBP

1p ordinary

SWAP

Decreasing Short

1,209

1.3813 GBP

1p ordinary

SWAP

Decreasing Short

32,426

1.3831 GBP

1p ordinary

SWAP

Decreasing Short

1,800

1.3860 GBP

1p ordinary

SWAP

Decreasing Short

13

1.3870 GBP

1p ordinary

SWAP

Decreasing Short

529

1.3873 GBP

1p ordinary

SWAP

Decreasing Short

641,300

1.3875 GBP

1p ordinary

SWAP

Increasing Short

31,418

1.3700 GBP

1p ordinary

SWAP

Increasing Short

19,575

1.3707 GBP

1p ordinary

SWAP

Increasing Short

25,802

1.3709 GBP

1p ordinary

SWAP

Increasing Short

7,928

1.3710 GBP

1p ordinary

SWAP

Increasing Short

1,367

1.3719 GBP

1p ordinary

SWAP

Increasing Short

9,490

1.3730 GBP

1p ordinary

SWAP

Increasing Short

40,253

1.3732 GBP

1p ordinary

SWAP

Increasing Short

16,822

1.3739 GBP

1p ordinary

SWAP

Increasing Short

73,121

1.3741 GBP

1p ordinary

SWAP

Increasing Short

763

1.3795 GBP

1p ordinary

SWAP

Increasing Short

688

1.3800 GBP

1p ordinary

SWAP

Increasing Short

1,077

1.3810 GBP

1p ordinary

SWAP

Increasing Short

3,901

1.3840 GBP

1p ordinary

SWAP

Increasing Short

947

1.3878 GBP

1p ordinary

SWAP

Increasing Short

1,535

1.3879 GBP

1p ordinary

SWAP

Increasing Short

2,229

1.3880 GBP

1p ordinary

CFD

Decreasing Short

85,367

1.3680 GBP

1p ordinary

CFD

Decreasing Short

9,274

1.3790 GBP

1p ordinary

CFD

Decreasing Short

29,272

1.3798 GBP

1p ordinary

CFD

Increasing Short

325,006

1.3700 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:

19 Aug 2025

Contact name:

Large Holdings Regulatory Operations

Telephone number:

020 3134 7213