If you run a business in the UK, you’ve probably heard the phrase ‘PSTN switch off’ more times than you would like. Despite this, many organisations are still unsure about what this actually means for them, or what they are supposed to do about it.
With the Public Switched Telephone Network (PSTN) being fully retired in January 2027, this year (2026) is the year to get your communications in order. Think of it as the final boarding call before the old copper network is switched off for good.
This guide walks you through a practical, no-nonsense checklist to help you prepare with confidence.