Grafton Group

Major Shareholding Notification • Jan 26, 2021

STANDARD FORM TR-1

VOTING RIGHTS ATTACHED TO SHARES– ARTICLE 12(1) OF DIRECTIVE 2004/109/EC FINANCIAL INSTRUMENTS – ARTICLE 11(3) OF THE COMMISSION DIRECTIVE 2007/14/ECi

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached ii:

Grafton Group PLC

1. Reason for the notification (please tick the appropriate box or boxes):

[X] an acquisition or disposal of voting rights

[ ] an acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

• [ ] an event changing the breakdown of voting rights
• 1. Full name of person(s) subject to the notification obligationiii:

BlackRock, Inc.

1. Full name of shareholder(s) (if different from 3.)iv:

See Section 9

1. Date of the transaction and date on which the threshold is crossed or reachedv:

22nd January 2021

1. Date on which issuer notified:

25th January 2021

1. Threshold(s) that is/are crossed or reached:

Holding for BlackRock Investment Management (UK) Limited have gone above 6%.

Notification made as a result of the completion of the UK's withdrawal from the EU.

1. Notified details:

A) Voting rights attached to shares
Class/type of		Situation previous to the	Resulting situation after the triggering transactionviiviii
shares (if	Triggering transaction vi
possible using	Number of	Number of	Number of	Number	of voting	% of voting rights
the ISIN CODE)	Sharesix	Voting	sharesxi	rightsxii
		rightsx	Direct	Direct	Indirectxiv	Direct	Indirect
				xiii
IE00B00MZ448	20,591,987	20,591,987	N/A	N/A	20,771,726	N/A	8.69%

SUBTOTAL A
(based on aggregate voting		20,771,726	8.69%
rights)

B) Financial Instruments
Resulting situation after the triggering transactionxv
Type of financial	Expiration Datexvi	Exercise/Conversion	Number of voting	% of voting rights
instrument		Period/ Datexvii	rights that may be
			acquired if the
			instrument is
			exercised/converted
		(in SUBTOTAL B
		relation to all
		expiration dates)

Total (A+B)	number of voting rights	% of voting rights
20,771,726	20,771,726	8.69%

1. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicablexviii:

Each of the following entities, which are wholly owned subsidiaries of BlackRock, Inc., hold the following interests in voting rights in their capacity as Investment Manager on behalf of clients:

Investment Manager	Voting Rights	%
BlackRock Investment Management (UK) Limited	14,348,953	6.00%
BlackRock Fund Advisors	2,685,386	1.12%
BlackRock Advisors (UK) Limited	2,093,591	0.88%
BlackRock Institutional Trust Company, National Association	1,565,486	0.65%
BlackRock Asset Management Canada Limited	48,057	0.02%
BlackRock (Netherlands) B.V.	29,211	0.01%
BlackRock Investment Management (Australia) Limited	790	0.00%
BlackRock Financial Management, Inc.	252	0.00%

1. In case of proxy voting: [name of the proxy holder] will cease to hold [number] voting rights as of [date].

2. Additional information:

Done at 12 Throgmorton Avenue, London, EC2N 2DL, U.K. on. 25th January 2021.