Holding(s) in Company

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/EC

1

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

Grafton Group plc

2

Reason for the notification (please place an X inside the appropriate box):

An acquisition or disposal of voting rights

X

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

Other (please specify)

3

Full name of person(s) subject to notification obligation:

FMR LLC

4

Full name of shareholders(s) (if different from 3):

5

Date of transaction (and date on which the threshold is crossed or reached if different):

16 May 2012

6

Date on which issuer notified:

17 May 2012

7

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

3%

8

Notified Details:

A: Voting Rights attached to shares

Class/type of shares (if possible using ISIN CODE)

Situation previous to the Triggering transaction

Resulting situation after the triggering transaction

Number of shares

Number of Voting Rights

Number of shares

Number of Voting Rights

% of Voting Rights

Direct

Direct

Indirect

Direct

Indirect

IE00B00MZ448

7,000,000

7,000,000

6,900,000

6,900,000

2.97%

SUBTOTAL A (based on aggregate voting rights)

7,000,000

7,000,000

6,900,000

6,900,000

2.97%

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/Conversion period

No. of voting rights that may be acquired (if the instrument exercised/converted)

% of voting rights

TOTAL (A + B)

Number of voting rights

% of voting rights

6,900,000

2.97

9

Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: N/A

Custodian

Total

Management Company

BROWN BROTHERS HARRIMAN AND CO

5,900,000

FMRC-FIDELITY MANAGEMENT & RESEARCH COMPANY INC.

STATE STREET BANK AND TR CO

1,000,000

FMR-FIDELITY MANAGEMENT AND RESEARCH

Grand Total

6,900,000

Proxy Voting

10

In case of proxy voting Number of voting rights proxy holder will cease to hold - 100,000

11

Additional information