Contact Email Addresses Database for Security Companies in the UK

I am interested in UP-TO-DATE contact email addresses for 'Security Companies' in the UK. We do NOT require contact email addresses for CCTV or Security Alarm or similar companies... ONLY for 'security guards', 'alarm response', 'event security', 'door supervisors', 'manned guarding' and any company providing operational manned security in the UK.

I need:

- name of company
- website address (URL)
- email addresses
- if possible... name of Director or Operations Manager