TR1 Notification of Major Interest in Shares

27th Jan 2011 07:00

Financial Services Authority

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

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

attached: Source Bioscience Plc

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 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 the Legal & General Group Plc notification obligation: (L&G) 4. Full name of shareholder(s) Legal & General Assurance (if different from 3.): Society Limited (LGAS & LGPL)

5. Date of the transaction and date on which the threshold is crossed or 24 January 2011 reached: 6. Date on which issuer notified: 26

January 2011

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

reached: L&G (Above 3%) 8. Notified details:

A: Voting rights attached to shares Class/ Situation previous Resulting situation after the triggering transaction type of to the triggering shares transaction Number Number Number of voting % of voting rights if of of rights possible Shares Voting Number using Rights of shares the ISIN CODE Direct Indirect Direct Indirect Below 3% Ordinary 7,000,000 7,000,000

3.43% 2p (As on first notification under DTR Source Book)

B: Qualifying Financial Instruments Resulting situation after the triggering transaction Number of voting rights that may be Type of Expiration Exercise/ acquired if the % of voting financial date Conversion Period instrument is rights instrument exercised/ converted. C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of Exercise price Expiration Exercise/ Number of voting % of voting rights financial date Conversion period rights instrument instrument refers to Nominal Delta Total (A+B+C) Number of voting rights Percentage of voting rights 7,000,000 3.43%

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

Legal & General Group Plc (Direct and Indirect) (Group) Legal & General Investment Management (Holdings) Limited (LGIMH)

(Direct and Indirect)

Legal & General Investment Management Limited (Indirect) (LGIM)

Legal & General Group Plc (Direct) (L&G) ( 7,000,000 -3.43% = LGAS, LGPL & PMC)

Legal & General Investment Management (Holdings) Legal & General Insurance Limited (Direct) (LGIMHD) Holdings Limited (Direct) (LGIH) ( 7,000,000 - 3.43% = LGAS & LGPL) Legal & General Assurance (Pensions Management) Legal & General Assurance Limited (PMC) Society Limited (LGAS & LGPL) ( 7,000,000 - 3.43%= LGAS & LGPL) Legal & General Pensions Limited (Direct) (LGPL) Proxy Voting: 10. Name of the proxy holder: N/A

11. Number of voting rights proxy holder will cease N/A

to hold:

12. Date on which proxy holder will cease to hold N/A

voting rights: Notification using the total voting rights figure of 13. Additional information: 203,765,232 14. Contact name: Paul Toon (LGIM) 15. Contact telephone number: 020 3124 3854

vendor

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Related Shares:

SBS.L