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Have you recently received a letter from PO Box 4959 in Worthing and wondered who it’s from or why it landed in your mailbox? You’re not alone. Many UK residents have encountered unexpected or unfamiliar mail addressed from PO Box 4959, prompting curiosity and concern. The use of PO Boxes by financial institutions and service providers is quite common across the UK.
However, without a clear sender’s name or purpose, such letters can seem suspicious or confusing. PO Box 4959 in Worthing is indeed a real and legitimate address used by a recognised financial services organisation. Understanding its purpose and the kinds of communications it is used for can help eliminate uncertainty.
This blog will explore what PO Box 4959 represents, why you might receive mail from it, and what actions you should consider if it appears in your post. Let’s break it all down clearly and helpfully.
What Does PO Box 4959 in Worthing Refer To?

PO Box 4959 in Worthing is a registered and active PO Box address based in West Sussex, England. It is commonly associated with financial services communications and is located in the BN11 9ZF postcode. This PO Box address is used by a recognised financial services provider for official communications involving personal and financial matters.
The PO Box is located in Worthing, a coastal town in West Sussex. With the postcode BN11 9ZF and approximate coordinates of 50.814141 latitude and -0.370715 longitude, this mailing address is positioned near the sea level, around 9 metres above ground. It’s used by organisations for handling confidential or structured correspondence in a secure and manageable way.
PO Box 4959 is commonly used for:
- Financial documentation and shareholder communication
- Retirement and pension service letters
- Insurance or account-related notifications
- General customer service or policyholder updates
- High-volume customer mailing operations
Although some people confuse this with PO Box 4953, which is used for Power of Attorney documents, PO Box 4959 serves a distinct function. It’s primarily used for services related to investments, share schemes, and client-related queries. Businesses that handle sensitive information often use PO Boxes like this to manage secure inbound mail.
In summary, PO Box 4959 in Worthing is a functioning address used by a financial institution that operates under a business services framework in the UK. It is not a generic post office or scam but a secure mailbox for targeted client services.
Why Might You Receive Mail from PO Box 4959?
Receiving a letter from PO Box 4959 in Worthing can initially feel confusing, especially if you’re unsure who the sender is. However, there are legitimate and understandable reasons why such mail may be directed to you. It usually indicates that your personal or financial information is involved in a service being managed through an official process.
You may receive mail from this PO Box if:
- You are a shareholder or participant in an investment plan
- You have insurance policies or retirement services through a third party
- You’re listed as a next of kin, nominee, or joint policyholder
- Your employer or organisation is using services connected to financial records
- You’ve recently made a claim, change, or inquiry regarding a covered service
The mail could include:
- Share registration forms or updates
- Retirement account status updates
- Notices about changes in terms or conditions
- Tax-related correspondence or documentation
- Reminders or formal communications about claims or policies
Some people may receive unsolicited mail due to previous links to services or partnerships involving finance or insurance sectors. In many cases, the information is tailored and not generic junk mail. It’s crucial to read such mail carefully before dismissing it, especially if it contains reference numbers or policy details. This is often the first step in understanding whether action is required on your part.
So, if PO Box 4959 lands in your post, it’s a prompt to review and confirm whether you are affiliated with any financial or service-related body that uses formal mailing procedures for privacy and documentation reasons.
Is PO Box 4959 a Legitimate Address?

When an unexpected letter arrives from a PO Box, especially one you don’t immediately recognise, your first question is likely whether the address is real and trustworthy. In the case of PO Box 4959 in Worthing, it is indeed a legitimate and authorised mailing address used by a registered financial services provider operating in the UK.
Verifying the Authenticity of a PO Box Address
PO Boxes are widely used by businesses to manage customer communications, especially where privacy or high-volume mail is involved. The address PO Box 4959, with postcode BN11 9ZF, is located in Worthing, West Sussex. This PO Box is officially recognised and corresponds to a legitimate service provider with established UK operations. It is not listed among known scam addresses or flagged for fraudulent activity.
How to Know if a Letter Is Legitimate?
You can determine if a letter from PO Box 4959 is genuine by reviewing several details:
- Look for an official reference or customer number
- Check if the name and address match your known records
- Inspect the content for legal disclaimers or official letterheads
- Contact customer services using known numbers instead of those listed in the letter
Legitimate letters often include information tied directly to your name, account, or participation in a service. They rarely use vague language or urge you to take action without verification.
What to Do if You’re Unsure About the Sender?
If you’re still uncertain about the legitimacy of the mail:
- Do not provide any personal or financial information in return
- Contact the organisation’s official helpline or website directly
- Avoid calling phone numbers listed only in the letter if they seem unfamiliar
- Consult a trusted advisor or compare the sender’s info with official directories
Here’s a simple breakdown of how to validate a letter:
| Validation Method | What to Check | Action |
| Return Address Match | Does it include PO Box 4959 BN11 9ZF? | Confirm it’s a recognised area |
| Named Recipient | Is your name and address correctly listed? | Suggests intended delivery |
| Letter Formatting | Does it include reference numbers? | More likely to be official |
| Contact Method | Are contact details traceable online? | Use verified sources only |
| Urgency of Request | Is there pressure to act immediately? | Be cautious and verify first |
In conclusion, PO Box 4959 is used by a financial services organisation for secure, structured mail. If the content appears unfamiliar, it’s best to validate through trusted methods before taking action.
What Should You Do If You Receive Unexpected Mail from PO Box 4959?
Receiving a letter from a PO Box address you don’t recognise can prompt hesitation. If PO Box 4959 appears in your post and you’re unsure why, a few logical steps can help you determine the next course of action. This kind of mail often involves financial or policy-related matters, which means accuracy and verification are key.
Start by checking the envelope and the letter for personal identifiers:
- Does the letter mention your name and correct address?
- Is there an account number or reference code?
- Does the format appear formal and structured rather than promotional?
If any of these apply, it’s more likely the mail is meant for you.
If you’re still unsure:
- Contact your bank, insurer, or employer to ask if they use third-party services for mail
- Do not throw away the letter until you confirm its purpose
- Avoid calling numbers on the letter without double-checking their legitimacy
- Use online PO Box lookup tools or official directories to investigate
Most importantly, do not disclose sensitive data like National Insurance numbers or banking details in response to unexpected letters. Responsible organisations never request full personal information via unverified mail. If no action is needed, the letter may be informative. If it asks you to respond, treat it with appropriate caution and seek confirmation.
How Are PO Boxes Used by Businesses in the UK?

PO Boxes are a standard and trusted tool for UK businesses that need to manage incoming communication securely, efficiently, and often at a high volume. These boxes are not just for individuals but are especially common among corporate and financial organisations.
Businesses in the UK use PO Boxes to:
- Centralise all inbound customer mail at a single address
- Separate different departments with unique PO Box numbers
- Maintain confidentiality, especially in financial communications
- Avoid giving out direct office addresses for security reasons
- Handle returns or documentation without interrupting office workflows
In the financial services sector, PO Boxes are especially useful for:
- Shareholder communications and investor relations
- Customer service documentation such as claims or policy updates
- Retirement plan paperwork and pension-related matters
- Legal document reception where verification is required
This structure allows companies to route mail directly to processing departments or third-party handlers that manage client relationships. For customers, it offers a reliable and traceable system. For businesses, it ensures sensitive data is handled with care.
PO Box 4959 is part of this wider usage pattern, offering a secure and defined point of contact for clients without revealing internal locations or overloading business premises with paperwork.
How Can You Trace or Verify a PO Box Address in the UK?
Verifying a PO Box address in the UK is essential if you want to confirm the legitimacy of a letter or correspondence. PO Box 4959, like many others, can be looked up using publicly available resources or by contacting relevant organisations.
To trace or verify a PO Box address:
- Check the full address including the postcode (BN11 9ZF)
- Use the Royal Mail’s official address finder tools online
- Search for the PO Box in online business directories
- Look up the postcode to see what companies operate there
- Reach out to customer support through publicly listed contact details
Steps you can take:
- Confirm the organisation that uses the PO Box through a reliable source
- Match any reference numbers or account data with your records
- Request further clarification via email or official channels
PO Boxes used by financial institutions often show up in formal communications, but not in casual promotional material. If you’re sceptical about any information provided in a letter, you can write back requesting clarification or visit the business’s official website.
Always avoid taking action based on letters with vague content or untraceable numbers. Use your due diligence and verify before engaging.
Can You Reply to Mail Sent from PO Box 4959?

Yes, replying to mail sent from PO Box 4959 is possible, provided you follow the correct process and include all necessary reference information. However, since PO Boxes are used as collection points, direct replies without specific identifiers may not reach the intended recipient efficiently.
To reply effectively:
- Include any reference number or case ID from the original mail
- Use the complete PO Box address, including BN11 9ZF
- Address the reply to the named department if mentioned
- Write clearly and use appropriate envelopes or forms
In some cases, businesses request that you do not reply to PO Boxes but instead call or email customer services. Always check the original letter for return instructions.
If no clear reply address is given:
- Visit the organisation’s official website
- Use the online contact form or helpline
- Confirm whether physical replies are accepted or preferred
PO Boxes like 4959 are monitored, but they’re often part of a larger mail sorting system. Your reply might not be opened promptly unless it includes the correct referencing. To avoid confusion or delays, always clarify the reply procedure before sending any documentation or queries.
How to Contact PO Box 4959 in Worthing?
If you’ve received a letter from PO Box 4959 Worthing and need to follow up, it’s important to know the best way to get in touch. Since PO Boxes are used primarily for inbound mail, they often do not offer a direct reply method unless a specific department or reference is included. In this case, the organisation using this PO Box provides customer service lines and departmental contacts for different queries.
The contact options related to PO Box 4959 include the following:
- General Customer Queries: Call 0345 266 1670, available Monday to Friday, 9am to 5.30pm
- RAC Breakdown Cover Assistance: Available 24/7 at 0330 159 8485
- Car Insurance Claims: Contact via 0344 600 9021 during standard business hours
- Windscreen Cover (Comprehensive): Also handled through 0344 600 9021
When contacting, make sure to:
- Have your reference number or letter handy for faster service
- Call during official hours to speak with a representative
- Clearly mention that you received correspondence from PO Box 4959
If you’re writing a reply, include all identifying information and direct it to the full PO Box address along with the correct department if stated. Avoid sending sensitive documents unless requested through official communication. This ensures your message is routed correctly and securely.
These contact options provide a reliable way to seek clarification or take the next step with any mail you’ve received from PO Box 4959 Worthing.
Conclusion
PO Box 4959 in Worthing is a legitimate, secure mailing address used by a recognised UK financial service provider. While it may seem unfamiliar at first, especially if received unexpectedly, it plays an important role in delivering confidential and official communications.
Whether you’re a policyholder, shareholder, or someone linked to a financial process, receiving mail from this address could signal something important. If ever in doubt, you should always verify the details before acting. Understanding the purpose behind PO Boxes like this helps reduce confusion and ensures you respond appropriately when needed.
FAQs
Why am I getting mail from an unfamiliar PO Box in Worthing?
You may be receiving mail related to financial services or previous accounts connected to official third-party providers.
Can I find out who owns a specific PO Box in the UK?
Not directly, but you can trace it using Royal Mail tools or by contacting the customer service department linked to the content.
What should I do with mail that doesn’t have my name on it?
Do not open it. Return the mail to sender or report it to Royal Mail if it’s persistently sent to your address.
Is it safe to respond to PO Box correspondence?
Yes, but only after verifying the legitimacy of the mail and ensuring it’s from a known and trusted organisation.
Are PO Boxes commonly used by financial institutions in the UK?
Yes, they are widely used for security, privacy, and high-volume document handling by banks and service providers.
How can I verify if a PO Box is a scam or legitimate?
Check the postcode, reference numbers, and use Royal Mail or company websites to cross-check the details before replying.
Can Royal Mail help identify the organisation behind a PO Box?
Not directly due to privacy reasons, but Royal Mail can confirm if a PO Box is active and recognised at a specific postcode.
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