ODX.L Regulatory News (ODX)

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

Omega Diagnostics Group 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 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):___________________________________________

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

Octopus Investments Nominees Limited

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

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

23/09/2009

6. Date on which issuer notified:

29/09/2009

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

2% 3% 4% 5% 6% 7% 8% 9% 10% 11% 12%

8. Notified details:

n/a

A: Voting rights attached to shares

Class/type of shares 

 if possible using the 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 

% of voting rights

Direct

Direct

Indirect 

Direct

Indirect

GB00B00CRJ34

250000

250000

2500000

2500000

 -

12.12%

-

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument 

Expiration date 

Exercise/ Conversion Period/ Date 

Number of voting rights that may be acquired if the instrument is exercised/ converted. 

% of voting rights

-

-

-

-

-

Total (A+B)

Number of voting rights

% of voting rights

2500000

12.12%

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

n/a

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:

Russell Jarvis

15. Contact telephone number:

020 7710 8653

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

Full name (including legal form for legal entities)

Peter Orsi

Contact address (registered office for legal entities)

8 Angel Court, London, EC2R 7HP

Phone number 

020 7710 8653

Other useful information (at least legal representative for legal persons)

-

B:  Identity of the notifier, if applicable 

Full name 

Contact address 

Phone number 

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

C: Additional information