The Solicitors Regulation Authority (SRA) regulates both individuals (solicitors, registered European lawyers, registered foreign lawyers and registered Swiss lawyers) and firms (including partnerships, limited liability partnerships (LLPs), companies and sole practitioners). This Practice Note explains the concept of firm-based regulation under which entities are regulated by the SRA. What is firm-based regulation? The vast majority of firms operate via some sort of business entity, eg: • partnership • LLP • company The sole practitioner (ie sole trader) business model is the obvious exception. If a firm provides reserved legal activity services, it must generally be authorised by one of the legal services regulators. If a firm does not provide reserved legal activity services, it may not need to be authorised, but can, subject to complying with the SRA’s eligibility requirements, choose to bring itself within SRA regulation. If a firm provides immigration, claims management or financial services, it will need to be authorised, but this could be by the applicable sector-specific regulator (ie Immigration Advice Authority or Financial Conduct Authority) rather than the SRA—see Practice Note: New