DIRECTOR SHAREHOLDING & TRANSACTION IN OWN SHARES

LONDON SECURITY PLC ('the Company')

09 June 2011

DIRECTOR/PDMR SHAREHOLDING & TRANSACTION IN OWN SHARES

The Company has been notified that on 9 June 2011, Xavier Mignolet, Operations Director has exercised 30,000 ordinary shares of 1p each ('Ordinary Shares') in the Company under the Company's Inland Revenue unapproved share options scheme. Application has been made for the new Ordinary Shares to be admitted to trading on AIM as soon as is practicable. Following this exercise Mr. Mignolet also sold 30,000 Ordinary Shares at a price of 1,460.0 pence per share. Following this disposal Mr. Mignolet does not have a beneficial interest in the Company.

The Company also announces that on 09 June 2011 it purchased 30,000 Ordinary Shares in the Company for cancellation at a price of 1,460.0 pence per share.

The purchase equates to approximately 0.24% of the issued share capital at that time.

Following the issue, purchase and subsequent cancellation, the issued share capital of the Company consists of 12,263,373 Ordinary Shares with voting rights. The Company does not hold any shares in Treasury.

London Security plc

Richard Pollard 01422 372852

Brewin Dolphin

Sandy Fraser / Iain Marlow 0845 213 4730