To trace lost NS&I investments, first separate an unknown holding from missing paperwork.
Also distinguish this from a lost Premium Bonds holder’s number.
The key is to avoid choosing the wrong route first.
Choose the NS&I route that matches the loss
Choose the route based on what is missing.
Use the NS&I Tracing Service when you cannot confirm what was bought or whether it remains open. If you know you hold Premium Bonds, National Savings Certificates, Income Bonds or a Direct Saver account, ask NS&I to recover access or replace the record. This is quicker when you know the product reference. It does not remove NS&I's identity checks.
Trace an investment you cannot identify
Use the tracing route when you do not know whether an NS&I holding still exists.
This includes an old investment mentioned by a parent. It also includes a vague memory of National Savings Certificates.
It can cover Premium Bonds bought decades ago, even if you have no paperwork at all.
Replace a known certificate or record
Use a direct NS&I replacement or management route when you know the product.
Give the product name and its reference number. This is usually faster than a broad tracing request.
The common mistake is requesting a certificate replacement for an investment you cannot identify.
Recover Premium Bonds details first
Ask NS&I to recover Premium Bonds details when you know the Bonds exist.
Give your full name, date of birth and a past address. Do this before starting a trace.
Premium Bonds do not expire because they are old.
| Your problem | Best first route | Prepare first | Avoid |
|---|
| You do not know what investment exists | NS&I Tracing Service | Names, old addresses, date of birth | Requesting a certificate replacement |
| You know the product and reference | Direct NS&I replacement or management | Product name and reference number | Submitting a broad trace first |
| You lost Premium Bonds access details | NS&I recovery or direct contact | Full name, date of birth, past address | Assuming Bonds have expired |
Choosing the right route avoids a wasted request.
⚠️ Do not start a broad trace when you know the product and reference number.
The next task is to match your details to old records.
Gather details that match old NS&I records
Give NS&I details that match records created before your current details were in use.
List every name and address used
Write every name and address in date order on one sheet.
Include maiden names, married names and middle names. Include shortened names and former postcodes.
Write the rough dates you lived at each address. An approximate year is better than a gap.
Search papers for useful references
Search old papers for any NS&I clue. Check drawers, files and papers kept with wills.
Look for an investment reference number or certificate serial number. A Premium Bonds holder number can also help.
Keep account statements, prize notices and letters. Letters may name National Savings Certificates, Income Bonds or a Direct Saver account.
Check who is allowed to apply
A living holder should normally apply personally.
An attorney may act only with valid legal authority. NS&I must accept that authority.
After a death, the executor named in the will usually gives instructions. An administrator may act where there is no will.
A beneficiary does not automatically have this authority.
Before you send a request, make one file with your likely matches. Add your full date of birth and every former name.
Add each former address and postcode. Include copies or clear notes from old investment papers.
For missing records, do not delay because proof is incomplete. Explain what is missing.
Give rough purchase dates or amounts if you can. NS&I may ask for more proof before sharing information.
NS&I may also ask for proof before replacing a certificate.
A usual case involves a child’s Bonds bought by a grandparent. The adult holder finds an old address, and NS&I can begin checks.
Provide a death certificate when NS&I asks for it. Also provide probate, letters of administration or power-of-attorney evidence when needed.
Keep each investor’s evidence separate. A joint account and an estate claim can need different checks.
⚠️ Do not mix one person’s papers with another person’s claim, even within the same family.
These details give NS&I something concrete to match. Next, send them through one clear route.
Send the request through the right service
Send one focused request, keep copies and use the same reference when you follow up.
Choose the route in under one minute
1. Unknown holding
Send an NS&I tracing request with historic details.
2. Known product
Ask NS&I about replacement records or direct management.
3. Lost Bonds details
Recover access before trying a trace.
Keep the date sent, copies of evidence and any NS&I reference for follow-up.
Use NS&I tracing for an unknown holding
Use NS&I tracing when you cannot identify the holding. Send the historic details you gathered.
Keep a copy of everything sent. Write down the date you sent it.
This step can take longer when old paper records need matching. Differences in names and old addresses can also slow checks.
Use My Lost Account as an extra search. Do not treat it as a replacement for NS&I tracing.
It may help if you do not know whether money was with NS&I. It may also help if it was with a bank or building society.
Its search rules and eligibility rules are separate. It does not update the NS&I tracing request.
Follow up without starting again
Follow up with the same reference instead of sending duplicate forms.
Duplicate requests can create two case records. That can make it harder to match your documents.
Use direct contact or online account management for a known NS&I product. Ask about Premium Bonds recovery first when the holder number is lost.
Keep expectations realistic. Checks can take longer for former names, estates and old paper records.
If no update arrives after a reasonable period, quote the original reference. Ask what further proof is needed.
Do not send another request instead.
The faster route is direct recovery when you know the details. The correct route for an unknown holding is an NS&I trace.
⚠️ Do not send the same tracing request through NS&I and My Lost Account. The services have separate checks.
This route does not apply if you know the product, keep its reference and only need an address change. Use NS&I’s account management or contact service instead. It also does not replace legal advice for a disputed estate or lack of mental capacity.
Questions & answers
How do I find lost NS&I investments?
Use the NS&I Tracing Service if you cannot identify an investment or confirm that it exists. Give former names, old addresses and your date of birth. Keep a copy of the request reference.
Can NS&I trace Premium Bonds from 50 years ago?
Yes, NS&I can trace Premium Bonds bought about 50 years ago. Bonds do not expire because of age. NS&I must verify the holder or the claimant’s legal authority.
What documents do I need for an NS&I trace?
Prepare your name history, date of birth, past addresses and any old NS&I reference. NS&I may then ask for identity or address proof. It may request estate papers if the investor has died.
Can a beneficiary trace a deceased person's NS&I investment?
A beneficiary may give information, but NS&I often needs the executor or administrator. That person must show legal authority. A death certificate alone may not be enough for probate or estate administration.
Find the official tracing route on the NS&I website. It links to the current form or contact process. Use it for an unknown holding, not a lost holder number or login.
What matters most:- Trace only holdings you cannot identify, because known accounts need recovery or replacement.
- Give NS&I former names and addresses, because old records may not match current documents.
- Premium Bonds remain valid with age, but prizes and management need confirmed ownership.
- Executors and attorneys need the right legal proof before NS&I can discuss another person’s money.
Related sources
These articles can help you explore the topic in more depth:
