A nonsolicitation agreement is a contractual restriction preventing a party, usually an employee, consultant or seller of a business, from soliciting specified persons such as customers, clients, suppliers or colleagues for a defined period after the relationship ends. It is a form of post‑termination restrictive covenant, distinct from non‑compete and non‑dealing clauses.In England and Wales, Scotland, Northern Ireland and Ireland, nonsolicitation covenants are generally enforceable only insofar as they protect a legitimate business interest (for example, customer connections or a stable workforce) and go no further than reasonably necessary in duration, geography and scope. The concept is not generally defined in statute but is developed through case law on restraint of trade and employment covenants.Typical uses include employment contracts, partnership and LLP agreements, franchise agreements and share sale or business sale contracts. Courts scrutinise whether “solicitation” involves active persuasion, targeted approaches or use of confidential information, and may distinguish this from merely accepting unsolicited business. Careful drafting, severability provisions and tailored periods (often 6–12 months, sometimes longer on business sales) are central to enforceability across all four jurisdictions.