Assess before producing
Not after a problem appears.
UKCA on a toy is a claim with documentation behind it. Where we make it, that documentation is ours.
A toy placed on the Great Britain market has to satisfy essential safety requirements, and the way that is demonstrated is documentary: a safety assessment addressing the chemical, physical, mechanical, electrical, flammability and hygiene hazards the toy presents, technical documentation, a declaration of conformity, and UKCA marking applied on the strength of all three. The marking is the visible end of a process, and without the process behind it the marking is simply ink.
Where the duty sits is the part that gets lost. A manufacturer carries these obligations, and so does a business that imports a toy into Great Britain — in that case the importer becomes responsible in substance, not merely a reseller. A supplier's verbal assurance does not discharge any of it. Where a product has already been properly placed on the market by someone else, a retailer's duties are narrower but real: check the marking, documentation and warnings are present, and do not supply something you have reason to believe does not conform.
Two specifics matter more than the rest because of what they prevent. An age exclusion for under-threes must state the hazard that caused it, usually small parts and choking, and stating it changes how a parent handles the toy. And button or coin cells must sit behind a compartment that needs a tool to open, because swallowing one causes severe internal injury very quickly. Alongside those, everything carries a batch mark and we keep supply records, so that if a recall is ever needed it can actually reach the people holding the product rather than being an announcement into the void.
Not after a problem appears.
A number alone warns nobody.
A recall has to be able to find people.
Materials, age marking or documentation. No obligation.