Starting your journey to get an SIA licence is an exciting first step toward a rewarding career in the security industry. But before you can even think about training, thereโs a crucial hurdle to clear: gathering the right documents. The Security Industry Authority has strict identity verification rules, and a single missing piece of paper can delay your SIA application by weeks or even lead to an outright rejection. Think of it as your first test of attention to detailโa skill that is absolutely essential for any security professional.
So, what exactly do you need? Itโs not as simple as just showing a passport. The SIA requires a specific combination of documents to verify your identity, your address history over the last five years, and your legal right to work in the UK. This blog will walk you through exactly what to gather, how to present it, and the common pitfalls to avoid to ensure your application process is as smooth and fast as possible.
For a more comprehensive breakdown of the licensing process, check out our SIA licence guide.
Key Takeaways
- You must provide a specific combination of documents: one from โGroup Aโ (like a passport) and two from โGroup Bโ (like a utility bill and bank statement).
- A complete and unbroken 5-year address history is mandatory; even a single missing month can cause your SIA application to be rejected.
- All first-time applicants are required to visit a Post Office for in-person identity verification.
- Any documents that are not in English must be accompanied by an official, certified translation.
- Preparing all your paperwork before you start your application is the single most effective way to speed up the entire process.
The Core of Your SIA Application: Group A and Group B Documents
The SIAโs identity verification system is built around two distinct categories of documents. To meet the requirements, you must provide one document from Group A and two different documents from Group B. For a full, official list, you can always refer to the main SIA licence documents page.
Group A Documents
Your Group A SIA document serves as your primary proof of identity. For the vast majority of applicants, the most straightforward option is a current UK passport. ย
If youโre an EU national, a valid passport from an EU/EEA country is perfectly acceptable. While a full UK birth or adoption certificate is also on the list, using a passport generally leads to a smoother process.
Group B Documents
Next, you need to supply two documents from Group B. These support your primary ID and, crucially, help to verify your current address. Popular options include a UK driving licence (either the photocard or the older paper version), a recent bank or building society statement, or a utility bill from the last three months. Itโs important to note that mobile phone bills are not accepted.
Other valid SIA documents include a recent mortgage statement, a P45 or P60 tax document, or an official benefits letter from a government body like HMRC or the DWP. The key rule here is that the two documents must come from different sources. For example, you can use a bank statement from Lloyds and another from Barclays, but you cannot use two statements from Lloyds.
Visit the official SIA website for more details regarding which documents you need.
The 5-Year Address History: Where Gaps Are Not an Option
This is the section of the SIA application that causes the most delays and rejections. The SIA requires a complete, unbroken record of every address you have lived at for the past five years. There is no flexibility on this. Even a one-month gap in your timeline will result in your application being flagged and likely rejected. This will eventually result in you having to start the process all over again.
Before you even begin the online application form for your desired SIA licence type, meticulously map out your addresses. For each location, you will need the full postcode and the exact month and year you moved in and out. If youโve moved frequently, attended university, or had temporary stays with family, every single period must be accounted for.ย

If you find yourself struggling to recall precise dates, itโs time to do some detective work. Dig out old tenancy agreements, search through your email for utility bills, or check your online banking for statements from that period. Getting this right is critical, as itโs one of the most common mistakes that can delay your application.
Recommended Reading: How To Avoid Getting Your SIA Licence Rejected
The Post Office Visit: Your In-Person Verification
For every first-time SIA licence applicant, the document process culminates in a mandatory visit to a designated Post Office branch. After you have completed the online portion of your application and paid the ยฃ184 fee, the SIA will email you a reference letter. You must take this letter, along with all of your original physical documents, to the Post Office for verification.
A trained staff member will carefully check your documents against the SIAโs requirements. They’ll take a digital photograph that will be printed on your licence and transmit all the information to the SIA. This service comes with a small additional fee (around ยฃ13.50). Make sure to bring your original documents, as photocopies or digital versions will not be accepted.ย
Not all Post Office branches offer this service. Be sure to check the Post Officeโs official website for a participating branch near you before you head out. For a detailed walkthrough, our step-by-step guide to applying for your SIA licence covers everything about the process.
Navigating Special Circumstances
Life isnโt always straightforward, and the SIA has processes in place for common special circumstances. If your name has changed due to marriage, divorce, or by deed poll, you must provide the official legal document that proves this change, such as a marriage certificate or deed poll certificate. The name on your application must match the name on your documents, so consistency is key.
For non-UK/EU nationals, proving your right to work in the UK is a central part of the application. Your Biometric Residence Permit (BRP) is the most important document here, as it serves as both your Group A ID and your proof of eligibility to work. Depending on your specific immigration status, you may be asked to provide additional documentation, such as a visa or work permit.
Finally, if any of your official documents are not in English, you must provide a certified translation. This needs to be from a professional translator or an accredited service. The SIA will not accept a simple translation from a friend, no matter how fluent they are. The translation must be officially certified as a true and accurate representation of the original document.
Whatโs Next on Your Journey?
Once your documents have been successfully verified at the Post Office, the SIA will proceed with its comprehensive background checks, including a criminality check. This part of the process typically takes several weeks. For a complete timeline of what to expect, our detailed guide on how long it takes to get an SIA licence breaks down every single stage.
Gathering your documents is the foundational step of a successful SIA application. By investing the time to get this right from the beginning, you are setting yourself up for a smooth process. With your paperwork in order, you can confidently move on to the most exciting part: the training.
Ready to take the first step towards your new career? Browse our full range of SIA training courses and book your spot today. A successful and rewarding career in the security industry starts with the right preparation.












