The Trade Union and Labour Relations (Consolidation) Act 1992 (TULRCA) imposes duties on employers who are proposing to dismiss at least 20 employees as redundant at one establishment within 90 days or less.  One such duty is to notify the Secretary of State at least 30 days before the first of those dismissals

Background

The relevant English law relating to post-termination of employment restrictions (PTRs) arises from case law around the doctrine of restraint of trade, rather than statute.

The basic starting point is that PTRs are void on the basis that they amount to unlawful restraints on trade. English courts will however enforce a restriction