Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

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

Catlin Group Limited

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

An acquisition or disposal of voting rights

X

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

An event changing the breakdown of voting rights

Other (please specify):

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

MFS Investment Management

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

MFS invest in securities of the issuer on behalf of its various mutual funds and institutional account clients.

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

04 February 2015

6. Date on which issuer notified:

05 February 2015

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

5.00%

8. Notified details:

A: Voting rights attached to shares

Class/type ofshares

if possible usingthe ISIN CODE

Situation previousto the triggeringtransaction

Resulting situation after the triggering transaction

NumberofShares

NumberofVotingRights

Numberof shares

Number of votingrights

% of voting rights

Direct

Direct

Indirect

Direct

Indirect

 BMG196F11004

19,822,597

19,822,597

16,898,573

4.6607%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate

Exercise/ConversionPeriod

Number of votingrights that may beacquired if theinstrument isexercised/ converted.

% of votingrights

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

Resulting situation after the triggering transaction

Type of financialinstrument

Exerciseprice

Expirationdate

Exercise/Conversionperiod

Number of votingrights instrumentrefers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

 16,898,573

 4.6607%

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

Entity Holding Percentage Held

MFS Investment Management Canada Ltd. 291,720 0.0804%

MFS Investment Management 15,083,733 4.1602%

MFS Heritage Trust Company 502,863 0.1387%

MFS Institutional Advisors, Inc. 1,020,257 0.2814%

Notifiable Interest 16,898,573 4.6607%

Shares Outstanding 362,573,000

Proxy Voting:

10. Name of the proxy holder:

N/A

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

N/A

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

N/A

13. Additional information:

14. Contact name:

William Spurgin

15. Contact telephone number:

 020 7626 0486