Total Voting Rights

31 January 2014

Source BioScience plc

('Source BioScience' or 'the Company')

Shares in Issue

In accordance with the FCA's Disclosure and Transparency Rules, Source BioScience plc (LSE: SBS) confirms that as at 31 January 2014 the Company has 313,448,965 ordinary shares of 2 pence each in issue.

The figure of 313,448,965 may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or change to their interest in, Source BioScience plc under the FCA's Disclosure and Transparency Rules. The voting rights of all ordinary shares in the Company rank pari passu and the Company does not hold any ordinary shares in treasury.

Enquiries

Source BioScience plc

Dr Nick Ash, CEO

Tel: +44 (0) 115 973 9010

Email: [email protected]

www.sourcebioscience.com

For investor and media enquiries:

N+1 Singer (Financial Adviser, Sponsor and Broker)

Aubrey Powell/Joseph Stroud

Tel: +44 (0)20 7496 3000

www.n1singer.com

College Hill (PR Agency)

Melanie Toyne-Sewell/Donia Al Saffar

Tel: +44 (0)20 7457 2020

Email: [email protected]

About Source BioScience:

Source BioScience plc (LSE: SBS) is an international laboratory services and products business serving the healthcare and life science research markets. The Healthcare operations provide screening and reference laboratory diagnostic testing for cancer and other diseases in addition to complementary products for serology, diagnostics and sample storage. The LifeSciences division provides gene-based laboratory research support from conceptualisation to implementation, calling upon a wide range of innovative technology platforms and an online catalogue of biomolecular tools including cDNA clones and antibodies. The PharmaBiotech division provides support for drug discovery, from biomarker discovery and clinical trial services through to stability storage and sample archiving under environmentally controlled conditions. A superior quality management system, including GLP, GCP and CPA accreditations, make the services very attractive for applications in regulatory studies or in a clinical and diagnostic setting. Source BioScience has its headquarters in Nottingham, UK. For more information, see www.sourcebioscience.com.