A uk responsible person services is a designated individual or organization based in the United Kingdom that acts on behalf of a company based outside the UK to ensure compliance with UK regulations for products placed on the UK market. This requirement became mandatory following the UK's exit from the European Union. This is a regulatory compliance service especially for companies looking to market products in the UK under post-Brexit regulations, like cosmetics (UK Cosmetics Regulation), medical devices (UK MDR), or general product safety.