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:

Deltex Medical Group plc

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

An acquisition or disposal of voting rights

Yes 

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

 No

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

 No

An event changing the breakdown of voting rights

 No

Other (please specify):

No 

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

 Gartmore Investment Limited

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

 See attached schedule

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

 12th November 2009

6. Date on which issuer notified:

 13th November 2009

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

 10%

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

 GB0059337583

 12,401,111

 12,401,111

12,821,111

12,821,111

 10.290%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate

Exercise/ Conversion Period

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

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

 12,821,111

 10.290%

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

Proxy Voting:

10. Name of the 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:

All figures are based on the Company's issued share capital of 124,598,597 as provided by Exshare

E mail contact [email protected] 

14. Contact name:

RDU

15. Contact telephone number:

0207 782 2324

Share Description

Fund Managing Co.

Shares Held

% of Issues

Share Capital

UK Registered Owner

Beneficial Owner

Equities

DELTEX MEDICAL GRP ORD GBP0.01

Gartmore Fund Managers Limited

Gartmore Investment Limited

6,373,804

6,447,307

5.115%

5.174%

HSBC GLOBAL CUSTODY NOMINEE UK LIMITED

VIDACOS NOMINEES LTD A/C 2303

GARTMORE FUND MANAGERS LTD A/C GARTMORE UK & IRISH SMALLER COMPANIES

THE ALPHAGEN VOLANTIS FUND LIMITED

12,821,111

10.290%

12,821,111

10.290%