Director/PDMR Shareholding

2 June 2011

Directors' Interests in the shares of BTG plc

The following shares in the Company have been released to Dr Louise Makin.

1. An award of 316,824 shares was made under the Company's performance share plan on 28 May 2008. Following testing of the performance conditions, 34,851 shares lapsed and the balance of 281,973 shares vested and were released to Louise Makin on 31 May 2011.

2. On 28 May 2008, half of Louise Makin's annual bonus earned in relation to the year ended 31 March 2008 was awarded in shares under the Company's deferred share bonus plan. This amounted to 85,185 shares. The shares were due for release to her as long as she remained in employment with the Company. They were released to her on 31 May 2011.

3. A grant of 75,000 share options was made on 11 November 2004 at an exercise price of 92p per share, subject to performance conditions. 42,392 tax unapproved shares were exercised in 2010 and the balance of 32,608 tax approved share options have now been exercised.

Following the sale of shares principally to meet tax, national insurance and option exercise costs, Louise Makin's shareholding has increased by 100,000 to 476,853 shares, being 0.146% of the issued share capital. The shares were sold at an average price of 274.58p per share.

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Contact for Queries: Andy Burrows

Director of Investor Relations

Telephone: 020 7575 1741