Save, manage and quickly reuse your holder numbers for easier Premium Bonds prize checking.
Users
5
+1 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
2
0 in 30 days
Store rank
#247K
#206K among extensions
Version
1.0.0
updated 13 Aug 2026
Users
monthly, 2 months
Latest, 19 Oct 2026:5 usersMove the mouse over the chart for any month
Ratings count
monthly, 2 months
Latest, 19 Oct 2026:2 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Premium Bonds Prizes Holder Number Manager
Premium Bonds Prizes Holder Number Manager makes it quicker and easier to use the NS&I Premium Bonds Prize Checker, particularly if you regularly check more than one holder number.
KEY FEATURES
• Save holder numbers for quick access when checking Premium Bonds prizes.
• Give each saved holder number a friendly name to help identify it.
• Quickly select and reuse saved holder numbers without typing them again.
• Rename or remove saved holder numbers whenever you want.
• Validate holder numbers before saving them.
• Check holder number formatting before submitting a prize check.
• Automatically remove unsupported special characters from holder number entry.
• Provides clearer feedback when an entered holder number appears to be invalid.
• Works with both the main Prize Checker and the "Check another holder's number" section.
PRIVACY
Saved holder numbers and the names you give them are stored locally using Chrome extension storage. They are not sent to or collected by the extension developer.
When validation is required, the holder number is sent directly to NS&I's existing Prize Checker service so that it can be checked.
The extension is limited to the public NS&I Premium Bonds Prize Checker. It does not access NS&I login pages, passwords, authentication information or your online NS&I account.
INDEPENDENT EXTENSION
Premium Bonds Prizes Holder Number Manager is an independent, unofficial browser extension.
It is not an NS&I product and is not affiliated with, endorsed by, approved by, maintained by or supported by National Savings and Investments (NS&I).
The extension does not calculate or determine Premium Bonds prize results. Prize results are provided by NS&I's existing Premium Bonds Prize Checker.