Immigration advice is regulated work: advisers must be registered with the Immigration Advice Authority (IAA – formerly the OISC) at Level 1, 2 or 3, or be members of a qualifying legal profession, and holding professional indemnity insurance sits within the regulatory framework's expectations of registered advisers.
Match limits to your registration level and caseload – appeals work is the rating driver – and put data protection at the centre of the programme, because in this field a lost file is a harmed person. Verify current IAA expectations when registering or renewing, keep claims-made cover continuous, and if your practice serves vulnerable clients pro bono alongside paid work, tell the insurer: scope precision protects you both.