Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuerof existing shares to which voting rights areattached: ii

Umeco plc

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 thenotification obligation: iii

Hermes Equity Ownership Services Limited and

Hermes Focus Asset Management Limited

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

Shares are held by the relevant custodian(s)

5. Date of the transaction and date onwhich the threshold is crossed orreached: v

9 May 2012

6. Date on which issuer notified:

10 May 2012

7. Threshold(s) that is/are crossed orreached: vi, vii

12%

8. Notified details:

A: Voting rights attached to shares viii, ix

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 x

Direct

Direct xi

Indirect xii

Direct

Indirect

0911607

GB0009116079

6,642,599

6,642,599

N/A

N/A

6,284,072

N/A

12.95849%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/Conversion Period xiv

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

% of votingrights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financialinstrument

Exercise price

Expiration date xvii

Exercise/Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

6,284,072

12.95849%

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

Hermes UK Small Companies Focus Fund

BT Pension Scheme Trustees Limited, as trustee of the BT Pension Scheme ("BTPS") is the parent undertaking of Britel Fund Nominees Limited and Britel Fund Trustees Limited, which is the parent undertaking of Hermes Fund Managers Limited ("HFML"). HFML is the parent undertaking of:

1. Hermes Equity Ownership Services Limited ("HEOS") (voting rights: 0.03984%)*

2. Hermes Focus Asset Management Limited ("HFAM") as General Partner of the following limited partnership:

a. Hermes UK Small Companies Focus Fund ("HUKSFF") (voting rights: 12.91865%)**

\* This notification is being made in respect of HEOS, which is an indirect holder of shares for the purpose of DTR 5.2.1(h), as a result of control of voting rights in relation to such shares.

*\* This notification is also being made in respect of HFAM, which has an individual notification obligation under DTR 5.1.2

HUKSFF has two general partners; Hermes Investment Management Limited and HFAM. Under the limited partnership agreement for HUKSFF the voting obligations are excercised by HFAM.

Proxy Voting:

10. Name of the proxy holder:

See Comment in Section 9.

11. Number of voting rights proxy holder will ceaseto hold:

See Comment in Section 9.

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

See Comment in Section 9.

13. Additional information:

THIS DISCLOSURE REPRESENTS A CESSATION OF VOTING CONTROL ONLY.

14. Contact name:

Mike Giles

15. Contact telephone number:

01926 331 800

Note: Annex should only be submitted to the FSA not the issuer

Annex: Notification of major interests in shares xxii

A: Identity of the persons or legal entity subject to the notification obligation

Full name

(including legal form of legal entities)

Hermes Equity Ownership Services Limited and

Hermes Specialist UK Focus Fund

Contact address

(registered office for legal entities)

1 Portsoken Street, London E1 8HZ

Phone number & email

020 7702 0888

Other useful information

(at least legal representative for legal persons)

B: Identity of the notifier, if applicable

Full name

Hermes Fund Managers Limited as agent for BT Pension Scheme Trustees Limited

Contact address

1 Portsoken Street, London E1 8HZ

Phone number & email

020 7702 6110 ([email protected])

Other useful information

(e.g. functional relationship with the person or legal entity subject to the notification obligation)

C: Additional information

Please contact James Sherry on the above number for further information.

Copy sent to Company Secretary of UMECO Plc, Fax number 01926 312 680 [email protected] [email protected]; [email protected]

For notes on how to complete form TR-1 please see the FSA website.