When a DPN arrives, the 21-day clock starts on the issue date. You must...

https://online-wiki.win/index.php/Small_Business_Restructuring_vs_Voluntary_Administration:_Solving_a_Non-Lockdown_DPN

When a DPN arrives, the 21-day clock starts on the issue date. You must identify whether it is a lockdown or non-lockdown penalty to determine the best path. Master these distinctions to guide your clients, so you can triage fast and keep options open.