A Director Penalty Notice triggers a strict 21-day clock from the issue date....

https://wiki-coast.win/index.php/Solicitor_checklist:_first_30_minutes_after_a_Director_Penalty_Notice_arrives

A Director Penalty Notice triggers a strict 21-day clock from the issue date. Distinguishing between lockdown and non-lockdown DPNs is vital for your client's strategy. This guide clears the technical fog, so you can triage fast and keep options open.