Holding(s) in Company

Proteome Sciences PLC ("the Company")                     

                              Notifiable Interest                              

                                                                               

A form TR-1 containing the following information has been received by the
Company.

TR-1 notification of major interests in shares

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

Proteome Sciences Plc

2. Reason for the notification

An acquisition or disposal of voting rights

 

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

Cubana Investments Plc

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):

6th March 2008

6. Date on which issuer notified:

13th March 2008

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

>7%

8. Notified details:

A: Voting rights attached to shares

Class/type   Situation previous  Resulting situation after the triggering        
of shares    to Triggering       transaction                                     
             transaction                                                         
if possible                      Notification required under DTR transitional    
using ISIN                       provision 7                                     
CODE                                                                             
             Number of Number of Number of  Number of voting      % of voting    
             Shares    Voting    shares     rights                rights         
                       Rights                                                    
                                                                                 
                                                                                 
                                 Direct     Direct     Indirect   Direct Indirect
                                                                                 
                                                                                 
                                                                                 
GB0003104196 8,949,672 8,949,672 10,374,272 10,374,272 10,374,272 7.89%          
                                                                                 

B: Financial Instruments

Resulting situation after the triggering transaction                           
                                                                               
                                                                               
                                                                               
Type of     Expiration Exercise/     Number of voting rights that may   % of   
financial   date       Conversion    be acquired if the instrument is   voting 
instrument             Period/ Date  exercised/ converted               rights 
                                                                               
                                                                               
                                                                               
                                                                               
                                                                               

Total (A+B)

Number of voting rights % of voting rights
                                          
                                          
                                          
10,374,272              7.89%             
                                          

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

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:

14. Contact name: James Malthouse

15. Contact telephone number: [phone]