8th May 2012 12:20
TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi
1. Identity of the issuer or the underlying Source BioScience 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 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 Killik & Co LLP the notification obligation: iii
4. Full name of shareholder(s) (if TDWCS LLP (on behalf of various different from 3.):iv
discretionary clients of Killik & Co LLP) 5. Date of the transaction and date 3 May 2012 on which the threshold is crossed or reached: v 6. Date on which issuer notified: 4 May 2012 7. Threshold(s) that is/are crossed 4% or reached: vi, vii 8. Notified details:A: Voting rights attached to shares viii, ixClass/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 xi Indirect Direct Indirect xii
ORD GBP0.02 6,758,100 6,758,100 8,458,100 8,458,100 4.15% GB0009739649 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.
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 8,458,100 4.15%
9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: xxi
Proxy Voting: 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: Julie Steele 15. Contact telephone number: 0207 337 0400
XLONRelated Shares:
SBS.L