Shareholder Notification

For filings with the FSA include the annex                                     
                                                                               
For filings with issuer exclude the annex                                      

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi                                

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

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      NO   
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    NO   
to qualifying financial instruments                                            
                                                                               
An event changing the breakdown of voting rights                          NO   
                                                                               
Other (please                                                             NO   
specify):                                                                      

3. Full name of person(s) subject to                MAM Funds plc              
the notification obligation: iii                                               
                                                                               
4. Full name of shareholder(s) (if               See Section 9 below           
different from 3.):iv                                                          
                                                                               
5. Date of the transaction and date                  17/12/2012                
on which the threshold is crossed or                                           
reached: v                                                                     
                                                                               
6. Date on which issuer notified:                    18/12/2012                
                                                                               
7. Threshold(s) that is/are crossed            Was 20.80%, Now 22.69%          
or reached: vi, vii                                                            

8. Notified details:
A: Voting rights attached to shares viii, ix

Class/type of  Situation previous            Resulting situation after          
shares          to the triggering                 the triggering                
                   transaction                      transaction                 
                                                                                
if possible               Number                  Number          % of voting   
using           Number      of      Number          of             rights x     
the ISIN CODE     of      Voting      of          voting                        
                Shares    Rights    shares        rights                        
                                                                                
                                    Direct   Direct  Indirect   Direct  Indirect
                                               xi       xii                     
                                                                                
GB00B4QVDF07   1,045,000 1,045,000 1,140,000   n/a   1,140,000   n/a     22.69% 

B: Qualifying Financial Instruments                                            
                                                                               
Resulting situation after the triggering transaction                           

Type of financial Expiration     Exercise/      Number of voting   % of voting 
   instrument     date xiii  Conversion Period rights that may be    rights    
                                    xiv         acquired if the                
                                                 instrument is                 
                                                   exercised/                  
                                                   converted.                  
                                                                               
       n/a           n/a            n/a               n/a              n/a     

C: Financial Instruments with similar economic effect to Qualifying Financial  
Instruments xv, xvi                                                            
                                                                               
Resulting situation after the triggering transaction                           

   Type of     Exercise Expiration Exercise/  Number of voting    % of voting   
  financial     price   date xvii  Conversion rights instrument  rights xix, xx 
  instrument                         period       refers to                     
                                     xviii                                      
                                                                                
                                                                Nominal   Delta 
                                                                                

Total (A+B+C)                                                                  

        Number of voting rights               Percentage of voting rights      
                                                                               
               1,140,000                                22.69%                 

9. Chain of controlled undertakings through which the voting rights and/or the 
financial instruments are effectively held, if applicable: xxi                 
                                                                               
Diverse Income Trust                                                           
HSBC Global Custody Nominee (UK) Ltd a/c 727563                         720,397
                                                                               
Milton UK Multicap Income Fund                                                 
Bank of New York Nominees Ltd a/c 397449                                324,603
                                                                               
CF Miton UK Smaller Companies Fund                                             
BNY Custodial Nominees (Ireland) Limited a/c 397904                      95,000


Proxy Voting:                                                                  
                                                                               
10. Name of the proxy holder:                             n/a                  
                                                                               
11. Number of voting rights proxy                         n/a                  
holder will cease to hold:                                                     
                                                                               
12. Date on which proxy holder will                       n/a                  
cease to hold voting rights:                                                   

13. Additional information:             Midas Capital Partners Ltd and Miton   
                                        Asset Management Ltd are both          
                                        subsidiaries of MAM Funds plc          
                                                                               
14. Contact name:                       John Bradley                           
                                                                               
15. Contact telephone number:           0151 906 2462                          

Note: Annex should only be submitted to the FSA not the issuer                 
                                                                               
Annex: Notification of major interests in sharesxxii                           

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

Full name                                                                      
(including legal form of legal                                                 
entities)                                                                      
                                                                               
Contact address                                                                
(registered office for legal entities)                                         
                                                                               
Phone number & email                                                           
                                                                               
Other useful information                                                       
(at least legal representative for                                             
legal persons)                                                                 

B: Identity of the notifier, if applicable

Full name                                                                      
                                                                               
Contact address                                                                
                                                                               
Phone number & email                                                           
                                                                               
Other useful information(e.g.                                                  
functional relationship with the person                                        
or legal entity subject to the                                                 
notification obligation)                                                       

C: Additional information                                                      
                                                                               

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