Johnson Matthey Regulatory News (JMAT)

NOTIFICATION OF MAJOR INTERESTS IN SHARES

1

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

Johnson Matthey Plc

2

Reason for the notification:

An acquisition or disposal of voting rights

3

Details of person subject to the notification:

Name: Aggregate of Standard Life Aberdeen plc affiliated investment management entities with delegated voting rights on behalf of multiple managed portfolios

City and country of registered office: Edinburgh, Scotland

4

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

N/A

5

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

5 December 2018

6

Date on which issuer notified:

6 December 2018

7

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

Resulting situation on the date on which the threshold was crossed or reached:

% of voting rights attached to shares: 7.91

% of voting rights through financial instruments: 0.00

Total of both in %: 7.91

Position of previous notification (if applicable):

% of voting rights attached to shares: 7.66

% of voting rights through financial instruments: 0.00

Total of both in %: 7.66

Total number of voting rights of issuer: 193,533,430

8

Notified details of the resulting situation on the date on which the threshold was crossed or reached:

VOTING RIGHTS ATTACHED TO SHARES:

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

GB00BZ4BQC70

Number of voting rights (direct):

N/A

Number of voting rights (indirect):

15,314,781

% of voting rights (direct):

N/A

% of voting rights (indirect):

7.91%

Total voting rights:

15,314,781 (7.91%)

9

Information in relation to the person subject to the notification obligation:

Full chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held starting with the ultimate controlling natural person or legal entity:

In case of proxy voting, please identify:

10

Name of the proxy holder:

N/A

Number and % of voting rights held:

N/A

The date until which the voting rights will be held:

N/A

11

Additional Information

In reference to Section 9, the shares detailed are managed by the named discretionary investment management entity within multiple portfolios on behalf of underlying clients, based on investment management agreements whereby the client has delegated the exercise of the voting power to the referenced investment manager.

This disclosure is to reflect the fact that the voting rights held indirectly by the underlying investment management entity Standard Life Investments Limited ("SLIL") decreased below a notifiable threshold due to trading on 5 December 2018. "SLIL" now holds the delegated voting rights to 4.98% of the shares in Johnson Matthey Plc. Prior to this crossing, "SLIL" held 5.02% of the delegated voting rights.

12

Contact Name:

Victoria Barlow, Deputy Company Secretary, Johnson Matthey Plc

Contact Telephone Number:

020 7269 8431

6 December 2018