NS&I Log In: How to Access Your Account and Check Premium Bonds

If you’ve ever stared at a login screen wondering where to find that elusive account number, you’re not alone. With over 25 million customers managing more than £200 billion in savings, NS&I (UK government savings bank) has refined its digital access over the years. This guide walks through the login process step by step, covering the website, the app, and what to do when things don’t go smoothly. By the end, you’ll know exactly how to access your account and check Premium Bonds prizes quickly.

NS&I customers: over 25 million ·
Total funds invested: £200+ billion ·
Years established: 1861 ·
Premium Bonds holders: over 21 million

The table below confirms a single pattern: the government-backed institution holds vast public trust and provides straightforward online access.

How do I log in to my NS&I account?

Step-by-step login process

• Go to secure.nsandi.com (NS&I official login page).
• Enter your NS&I number, surname, and password (Online Help Guide (YouTube)).
• Click “Log in”.

The catch: you must have your NS&I number handy. If you haven’t registered for online access yet, click “Register now” on the login page (Online Help Guide (YouTube)).

What to do if you forget your password

• On the login page, click “Forgotten your password”.
• Follow the email verification steps (Online Help Guide (YouTube)).
• If you no longer have access to your registered email, you’ll need to contact NS&I support.

Troubleshooting login issues

• Check your internet connection (Wi‑Fi or mobile data) (How to Fix NS&I Account Login Not Working 2024 (YouTube)).
• Verify you’re typing your NS&I number, surname, and password correctly (same source).
• Clear your browser cache and cookies (same source).
• Update your browser to the latest version or try a different browser/device (same source).
• If all else fails, contact NS&I customer support.

The pattern: most login problems for the 25 million NS&I savers are caused by forgotten credentials or browser glitches — following the step-by-step recovery pathway saves time and frustration.

What is my NS&I number and where do I find it?

Format of an NS&I number

• Each NS&I number is 11 digits long and starts with 11, 21, 31, or 41 (NS&I help centre).
• It is unique to you and required for all online logins.

How to retrieve your NS&I number if lost

• Click “Forgotten your NS&I number” on the login page (Online Help Guide (YouTube)).
• Alternatively, complete the NS&I Forgotten Security Details Form (Scribd) and post it to NS&I, Sunderland, SR43 2SB.
• You can also call NS&I customer support to request it.

Where to find it on correspondence

• Your NS&I number appears on statements, letters, and other documents from NS&I (NS&I help centre).
• Check the top‑right corner of your paper statements or the header of email notifications.

The pattern: your NS&I number is the key to every online action. Losing it is not a dead end — NS&I provides multiple recovery routes, from online links to postal forms.

How do I check my Premium Bonds prizes online?

Using the NS&I website login

• Log in at secure.nsandi.com with your NS&I number and password.
• Navigate to the “Premium Bonds” section and select “Check prizes”.
• Results show if you have won and the prize amount for a given date range (NS&I Premium Bonds prize checker page).

Using the NS&I app

• Log in to the NS&I app with the same credentials.
• Tap “Premium Bonds” and then “Check prizes”. The app gives instant results.

Setting up prize notification alerts

• In your account preferences, enable email or push notifications for prize wins (NS&I help centre).
• You can also choose to have prizes paid directly into your bank account.

The implication: over 21 million Premium Bonds holders rely on the prize checker — a quick check after each monthly draw means you never miss a win or the tax‑free cash that comes with it.

How do I use the NS&I app to manage my savings?

Downloading the NS&I app on iOS and Android

• Download from Google Play (Android) or App Store (iOS).
• The app is free and officially published by NS&I.

Logging in to the app

• Open the app and enter your NS&I number and password — same credentials as the website.
• After initial login, you can enable biometric authentication (fingerprint or face ID) for faster future access (NS&I security page).

Features available in the app

• View account balances and transactions.
• Check Premium Bonds prizes.
• Top up existing accounts or open new savings products.
• Update personal details and communication preferences.

The implication: the app brings NS&I’s full portfolio to your pocket. For the 25 million savers who want instant access without a browser, biometric login eliminates the friction of retyping credentials.

How do I access the NS&I website?

Go directly to www.nsandi.com

• The official website is www.nsandi.com (NS&I).
• From the home page, click the menu icon (three horizontal lines in the top‑right corner) and select “Log in” (Online Help Guide (YouTube)).

Using secure.nsandi.com for login

• For direct access, bookmark secure.nsandi.com.
• This is the dedicated login subdomain, protected by HTTPS (NS&I security page).

Browser compatibility and security tips

• Use the latest versions of Chrome, Firefox, Safari, or Edge.
• Always check you’re on a secure connection (padlock icon, URL starting with https://).
• Never enter your credentials on sites that are not nsandi.com or secure.nsandi.com (NS&I security page).

The trade-off: convenience versus vigilance. Accessing your account is simple, but the government‑backed nature of NS&I makes it a prime target for phishing — always verify the URL before logging in.

What We Know and What Remains Unclear

Confirmed facts

• NS&I is 100% backed by HM Treasury.
• Login requires an NS&I number and password.
• Official domains are nsandi.com and secure.nsandi.com.
• NS&I app is available on iOS and Android.

What’s unclear

• Exact app ratings and user satisfaction vary across app stores.
• Future security updates (e.g., two‑factor authentication) have not been confirmed by NS&I.

“We use the latest security measures to protect your account. Always ensure you are on our official site before entering personal details.” — NS&I website security statement (NS&I security page)

“Your security is our priority. Always verify you are on our official site before entering personal information.” — NS&I help page (NS&I help centre)

For the 25 million NS&I savers, the choice is clear: use the official login channels, keep your credentials safe, and if in doubt, contact NS&I directly. The government‑backed security is robust, but your own vigilance is the final layer of protection.

Once logged in, you can also visit the NS&I Premium Bonds winners page to check results and claim any prizes you may have won.

Frequently asked questions

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