Do You Need Accreditation to Win Security Tenders?
At Bid Writing Services (BWS), we work closely with security companies of all sizes—from newly launched firms to established providers looking to scale into larger public and commercial contracts.
One of the most common stumbling blocks we help clients navigate is accreditation. Not just whether you need it (you often do), but which ones matter for your target market, and how to showcase them persuasively in your bids.
We do not see accreditations as just a formality – they are strategic assets that often determine whether you even make it past the first scoring threshold.
So today, let’s talk security accreditations in detail and how at BWS we utilise them to your advantage!
SIA Licensing and the Approved Contractor Scheme (ACS)
If you are operating in manned guarding, CCTV monitoring, door supervision, or keyholding, the Security Industry Authority (SIA) licensing is non-negotiable. Every operative needs a valid front-line licence, and the business itself must be registered and compliant with SIA’s regulations. This is a base requirement, not a differentiator.
Where you can stand out, though, is by securing SIA’s Approved Contractor Scheme (ACS) accreditation. We have supported many clients through the process—from preparing self-assessments and aligning documentation to translating ACS success into bid-ready language.
ACS accreditation signals to buyers that your business has been independently assessed for competence in vetting, training, supervision, incident response, customer service and continual improvement.
In many security tenders we review—particularly from local authorities, universities, NHS Trusts and housing associations—ACS is either a pass/fail requirement or worth critical evaluation marks. For new entrants or smaller firms, ACS can be your ticket to breaking into high-value contracts and competing on a level playing field.
ISO Certifications: A Mark of Control and Commitment
Public and private sector buyers alike value ISO certifications because they are internationally recognised, externally audited, and show that your business is operating in a consistent, transparent and risk-managed way. We help our clients not just identify the right ISOs to pursue, but also ensure that certification is linked back to real operational strengths in their bid responses.
Most relevant are:
- ISO 9001 for quality management systems
- ISO 45001 for occupational health and safety
- ISO 14001 for environmental management
These standards may be included in the eligibility section of a tender or may contribute significantly under the “Quality” or “Technical Merit” criteria. Even when optional, they help buyers trust your delivery model and governance. We frequently write responses that show how these accreditations translate into better service continuity, fewer incidents, and lower risk to the client—helping you outscore competitors.
NSI and Specialist Accreditations
The National Security Inspectorate (NSI) remains a trusted name in the security industry, particularly for guarding, electronic systems and fire safety.
Whether you hold NSI Gold or Silver, that certification validates not just your technical standards but also your management controls. For tech-enabled services, especially those involving alarms or CCTV installations, NSI can offer a strong edge.
Beyond NSI, we have also helped specialist bidders promote certifications such as:
- CHAS or SMAS for health and safety assurance
- NASDU for dog handling qualifications
- SafeContractor or Constructionline where cross-sector capability is beneficial
When writing for our clients, we do not just name-drop accreditations. We show how they are embedded into your daily operations—from vetting procedures to site mobilisation, from shift handovers to incident logs.
Cyber Essentials
Cyber Essentials—backed by the UK Government—is now a recurring requirement, particularly in contracts involving infrastructure, education, and health.
We use certifications like Cyber Essentials and Cyber Essentials Plus to demonstrate that your business can protect sensitive client information, mitigate common cyber threats, and comply with GDPR and procurement law. If you are bidding for frameworks that involve digital reporting, lone worker apps, or network-integrated systems, this certification could be pivotal.
Why Accreditations Matter in Security Bid Writing
Procurement is increasingly compliance-driven.
Buyers need proof that your company is safe, legal, and credible—and accreditations are how they evidence that quickly and efficiently.
At Bid Writing Services, we help you turn these often-overlooked credentials into bid-winning differentiators.
Without SIA licensing or ACS, you may not even pass the selection stage. Without ISO certifications, your bid might lose marks to competitors. But with the right credentials—and the right bid writer—they become more than just requirements. They become persuasive content that builds confidence and scores points.
Overwhelmed with A Security Tender?
Bidding in the security sector can be longwinded and complex, but it can be made much easier with an organised, thorough approach.
While it can be done internally, professional bid writing companies (like us at Bid Writing Service) can significantly boost your chances of security tender success through expert bid writing and end-to-end guidance throughout the entire bidding process.
Have a security tender submission coming up? Why not utilise our expert security tender writers? Contact us at michael.baron@bidwritingservice.com or lauren.moorhouse@bidwritingservice.com to discuss your needs, or, fill out the form below!
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Syed Hasan
Accounts Manager
We engaged Bid Writing Service to support our submission for the GMC tender, aiming to drive potential growth for our business. While we are still awaiting the final outcome, we can confidently say the service has been excellent and well worth the investment. Special thanks to Jessica, Peter, and Francesca, whose professionalism, responsiveness, and attention to detail greatly contributed to the strength of our submission. Their collaborative approach and expertise made the entire process smooth and reassuring. Highly recommended for any organisation seeking expert bid support.
Office Staff
I recently had the pleasure of working with BWS on a bid, and I wanted to share my overwhelmingly positive experience. Their expertise and guidance were truly exceptional and instrumental in our success. Throughout the entire process, BWS provided unwavering support and demonstrated an impressive depth of industry knowledge. I genuinely believe their contributions were the key to our successful bid. Without hesitation, I would wholeheartedly recommend BWS and certainly plan to collaborate with them again in the future.
Andrew Hobbs
We engaged Bid Writing Service to support us in responding to a public tender opportunity. The service provided was simply exceptional. Well organised, proactive and responsive, accurate, punctual and of course very well written. This is a quality company with some really excellent client facing members of staff. Thank you Rhiannon, Francesca, Thea, Georgia and Lauren. Brilliant first impression and thoroughly recommended !!
Joseph Palmer
We've been working with Lauren and Rhiannon at Bid Writing Service for a few months now and they have been great! They are super responsive to emails and are always there to guide/support us through the process. As soon as a tender get released that matches our industry Lauren sends it straight over even if it's an evening or weekend so we have piece of mind knowing we won't miss any tenders! Thank you Lauren & Rhiannon
Ross Nicholson
Rhiannon was very switched on when it came to giving our company advice around bid writing. She produced drafts in a swift and professional manner which was important to us when the deadline was approaching fast.
Vanessa Varoujian
Incredibly professional, responsive and dedicated. Great to have a team who take the time to get to know the business and our ethos, and understand the pressures of tender and bid writing for a small organisation.
Vinceo Ferlita
Crown ices Ltd.
One of the best companies we have worked with. From our first conversation to the completed work. Always on hand for any questions we had, very knowledgeable and timely. Would use again and would highly recommend. Thank you for your hard work and such excellent service. Crown ices Ltd.
James Barber
I can not recommend BWS highly enough. Our first call with Luke was professional and built an immediate trust in the business. Lauren then took on our project at short notice with a 48 hour turn around time. She went above and beyond to ensure it was completed on time. We are now going to have a conversation about building a bid library and them becoming our exclusive supplier.
Chris C
Lauren from BWS went above and beyond to support us with our tender on extremely short notice. Her dedication, professionalism, and willingness to assist at all hours were second to none. Lauren's expertise and responsiveness made what could have been a stressful process smooth and efficient. I cannot recommend her highly enough for anyone needing reliable and high-quality support.
GMS SERVICES LTD
We have used BWS to assist with our bid writing services. Not only does this provide us with vital resources when there are multiple tenders we want to bid for, it also provides a quality bid which is written by engaging bid writers who are interested in our business and helping us succeed. They become a part of our business. We would highly recommend their services and many thanks to George Flower who has delivered a brilliant service for us.
Andrea Gascoigne
Recently won a nice project with the help of BWS, found them easy to work with and will use again.
Barry Chapman
We used this company as part of our growth strategy, in that they, and I mean Lauren Moorhouse as their lead, created from scratch a comprehensive Bid Library. This is an excellent process to begin this new phase of our development, to gain more work and raising our branding profile. The whole system, was great to see how it grew into the formidable tool that it is, which we now have at our disposal, with an increase in our confidence to bolster our turnover.
B&E Boys
We employed BWS to assist with our bid writing and knowledge management resources. The team were always very professional and flexible in working around our schedules whilst maintaining agreed deadlines. We would recommend BWS to others who are looking for a ‘fresh set of eyes’ on any business development material. We will be working with BWS in the future.
Matt Webb
We engaged with BWS to assist with a bid on a civils project and were very pleased with the work they delivered. There was always clear communication and documents were produced within the agreed timeframes and cost. Being the first time working with a bid writing company they immediately put as at ease and gave us confidence that our submission was as strong as possible which gave us the best chance. Thanks to all the team at BWS!
Nick Heath
Compass Fuel
We dived into the world of tenders, and Lauren made the process fairly simple for novices like ourselves. Wouldnt hesitate to use their services again. Nick Heath - Compass Fuel
Josh Lownsborough
Working with Kyle has been a pleasure , He has been working weekends and evenings to get the job ready in time, His responses are superb and he is a real professional at his job. I hope we win the contract and I will certainly use Kyle again in the future
Matt
My organisation has only recently started working with BWS and we have already seen a win! The team are always professional and work around my schedule. We will continue to work with BWS for future bids, thanks BWS team!
Tracey Gordon
Excellent, efficient and professional service from Lauren & Rhiannon. Would 100% recommend and will definitely use again.
James Bell
Great service. Quick turnaround and well written bid. Fingers crossed for a successful tender outcome.
Chris Davy
We used BWS and found them very quick and efficient, well worth using and will do again
Anele Griessel
Rhiannon was friendly, listened, and clarified our questions. Thank you very much
Mirela Stefan