Innovative Security Solutions
S4Security Ltd is based in London. Our services include security guarding.
Private
Security
Retail Security
Services
Corporate Sector
Security
Cleaning
Services
We’re delighted to present our new range of professional cleaning services. Our flexible and specially trained personnel are available at times to suit your requirements and are capable of delivering a wide range of services from standard office cleaning to advanced industrial cleaning.
- Mission Statement
- We provide tailor-made solutions to our clients seeking professional security services. Our goal is to establish long term partnership with all of our clients, protect the public and to add value to their businesses by helping them every step of the way with our professional services. We never take our clients for granted no matter how big or small they are, S4security ltd
- Terrorism threat level in UK
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The threat to the UK (England, Wales, Scotland and Northern Ireland) from terrorism is SUBSTANTIAL. Updated: 10 November 2025
- Latest News
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SIA approved contractors sub-contracting outside of the ACS
Sub-contracting to a company that is not an SIA approved contractor: what the rules are and how you ask for permission.
Updated: 6 November 2025
SIA launches major review of security licence qualifications
The SIA has today (5 November 2025) launched a major strategic review of the qualifications and linked training required to apply for an SIA licence.
Updated: 5 November 2025
Sarah Pumfrett appointed as a non-executive director of the SIA
The Security Minister has appointed Sarah Pumfrett as a non-executive director of the Security Industry Authority.
Updated: 17 October 2025
Updates to SIA licensing criteria taking effect on 1 December
The SIA will be updating the conditions and criteria it uses for licensing decisions on 1 December 2025.
Updated: 2 October 2025