Holding(s) in Company

For filings with the FSA include the annex

For filings with issuer exclude the annex 

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:

Porvair plc

2. Reason for notification (yes/no)

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 notification obligation:

Lloyds Banking Group plc

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

See Section 9

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

12 February 2009

6. Date on which issuer notified:

13 February 2009

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

Increase to above 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

Ord 2p

GB0006963689

N/A

N/A

24

24

2,104,328

N/A

5.00%

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

N/A

Total (A+B)

Number of voting rights

Percentage of voting rights

2,104,352

5.00%

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

2,090,896 shares (4.97%) are under the control of Insight Investment Management (Global) Limited, a wholly-owned subsidiary of Insight Investment Management Limited, a wholly-owned subsidiary of HBOS Insurance & Investment Group Limited, a wholly-owned subsidiary of HBOS plc, a wholly-owned subsidiary of Lloyds Banking Group plc (Indirect Interests).

Proxy Voting:

10. Name of 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:

Notification using the total voting rights figure of 42,073,640

14 Contact name:

Kenny Melville

15. Contact telephone number:

0131 243 8671