Atrato Onsite Regulatory News (ROOF)

NOTIFICATION OF MAJOR HOLDINGS (to be sent to the relevant issuer and to the FCA in Microsoft Word format if possible) i

1a. Identity of the issuer or the underlying issuer of existing shares to which voting rights are at- tached ii:

ATRATO ONSITE ENERGY PLC (GB00BN497V39)

1b. Please indicate if the issuer is a non-UK issuer (please mark with an "X" if appropriate)

Non-UK issuer

2. Reason for the notification (please mark the appropriate box or boxes with an "X")

An acquisition or disposal of voting rights

X

An acquisition or disposal of financial instruments

An event changing the breakdown of voting rights

Other (please specify) iii:

3. Details of person subject to the notification obligation iv

Name

Sarasin & Partners LLP

City and country of registered office (if applicable)

London, United Kingdom

4. Full name of shareholder(s) (if different from 3.) v

Name

Discretionary investment management clients of Sarasin & Partners LLP.

City and country of registered office (if applicable)

5. Date on which the threshold was crossed or reached vi:

24th November 2021

6. Date on which issuer notified (DD/MM/YYYY):

25th November 2021

7. Total positions of person(s) subject to the notification obligation

% of voting rights at- tached to shares (to- tal of 8. A)

% of voting rights through financial instru- ments

(total of 8.B 1 + 8.B 2)

Total of both in % (8.A + 8.B)

Total number of voting rights held in issuer (8.A + 8.B) vii

Resulting situation on the date on which threshold was

crossed or reached

6.0000%

0%

6.0000%

9,000,000

Position of previous notification (if applicable)

8. Notified details of the resulting situation on the date on which the threshold was crossed or reached viii

A: Voting rights attached to shares

Class/type of shares

ISIN code (if possible)

Number of voting rights ix

% of voting rights

Direct

(DTR5.1)

Indirect

(DTR5.2.1)

Direct

(DTR5.1)

Indirect

(DTR5.2.1)

GB00BN497V39

9,000,000

6.0000%

SUBTOTAL 8. A

9,000,000

6.0000%

B 1: Financial Instruments according to DTR5.3.1R (1) (a)

Type of financial in- strument

Expiration date x

Exercise/ Conversion Period xi

Number of voting rights that may be acquired if the instrument is exercised/converted.

% of voting rights

SUBTOTAL 8. B 1

B 2: Financial Instruments with similar economic effect according to DTR5.3.1R (1) (b)

Type of financial instrument

Expiration date x

Exercise/ Conversion Pe- riod xi

Physical or cash Settlement xii

Number of voting rights

% of voting rights

SUBTOTAL 8.B.2

Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer xiii

X

Full chain of controlled undertakings through which the voting rights and/or the

financial instruments are effectively held starting with the ultimate controlling natural person or legal entity (please add additional rows as necessary) xiv

Name xv

% of voting rights if it equals or is higher than the notifiable threshold

% of voting rights through financial in- struments if it equals

or is higher than the notifiable threshold

Total of both if it equals or is higher than the notifiable threshold

10. In case of proxy voting, please identify:

Name of the proxy holder

The number and % of voting rights held

The date until which the voting rights will be held

11. Additional information xvi

Place of completion

Sarasin & Partners LLP 100 Juxon House,

St. Pauls Churchyard London EC4M 8BU

Date of completion

25th November 2021