Holding(s) in Company

TR-1: Notifications of Major Interests in Shares

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

Senior plc

(LEI - 5493002HQHWN5JQHKQ51)

2. Reason for notification (yes/no)

An acquisition or disposal of voting rights

Yes

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): Modification to the number of voting rights managed on behalf of our clients

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

Standard Life Investments (Holdings) Limited (Parent Company)

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

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

15 June 2017

6. Date on which issuer notified:

16 June 2017

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

Standard Life Investment (Holdings) Limited - 5%

8: Notified Details

A: Voting rights attached to shares

Class/type of shares

If possible use 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

Percentage of voting rights

Direct

Indirect

Direct

Indirect

GB0007958233

16,632,118

16,632,118

21,037,028

21,037,028

5.01%

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ conversion period/date

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

Percentage of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Exercise price

Expiration date

Exercise /Conversion period

Number of voting rights instrument refers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

21,037,028

5.01%

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

Standard Life Investments (Holdings) Limited - 5.01%

Standard Life Investments Limited - Below 5%

Ignis Investment Services Limited - Below 5%

Proxy Voting:

10. Name of proxy holder:

11. Number of voting rights proxy holder will cease to hold:

12. Date on which proxy holder will cease to hold voting rights:

13. Additional information:

Notification using the Total Voting Rights figure of 419,416,250

14. Contact name:

Andrew Bodenham, Company Secretary, Senior plc

15. Contact telephone number:

01923 775547