Premium Bonds Checker
Check if your bond numbers have won prizes of £1,000 or more in the monthly ERNIE draw. Choose your preferred input method below.
Step 1: Enter Your Bond Numbers
Download your holdings document from your NS&I account and upload it here.
Click to upload or drag and drop
NS&I Holdings PDF only
🔒 All processing happens locally in your browser - your data never leaves your device.
Step 2: Provide Additional Details
Found on your NS&I holdings document
This helps filter matches more accurately
How It Works
1. Privacy First
All processing happens locally in your browser. Your bond numbers are never sent to any server, ensuring complete privacy and security.
2. Six-Step Filtering Process
We use a rigorous 6-step filtering process to match your bonds:
- Filter by area/county
- Filter by total holdings value
- Filter by bond age
- Filter by individual bond values
- Filter by bond number prefix
- Find exact bond number matches
3. Official Data Source
High-value winner lists (£1,000+) are downloaded directly from NS&I's official website. This tool uses the same data that NS&I publishes monthly.
Frequently Asked Questions
How do I check if my Premium Bonds have won?
You can check your Premium Bonds using the official NS&I prize checker at nsandi.com, the NS&I mobile app, or our checker above for high-value prizes (£1,000+). Simply upload your NS&I holdings PDF, paste your bond information, or enter your bond numbers manually.
Where do I find my Premium Bond numbers?
Your bond numbers are on your NS&I holdings document, which you can download from your online NS&I account. Each bond has a unique serial number in the format of 2-3 digits, 2 letters, then 6 digits (e.g., 123AB456789).
When are Premium Bonds drawn?
Premium Bonds are drawn on the first working day of each month by ERNIE (Electronic Random Number Indicator Equipment). Results are typically available from midnight on draw day.
Why does this checker only show £1,000+ prizes?
NS&I only publishes detailed bond numbers for high-value prizes (£1,000 and above). For checking all prize amounts including £25-£500 prizes, use the official NS&I prize checker.