UK Immigration Advice Authority (IAA) Complaint & Registration Investigation Response

The situation

Priya, 38, runs a small immigration advice firm in Leicester registered with the OISC/IAA at Level 2. She employs two staff and has been practising for seven years. In early 2026 she receives an IAA investigation notice: a client has complained that she provided incorrect advice on a spouse visa application, resulting in a refusal. The IAA gives her 28 days to respond.

Priya's problem: She provided the best advice she could, but the visa was refused on grounds she didn't predict. Is that a competence failure under the IAA Code of Standards? What does the Code actually require at Level 2? How does she explain her reasoning in a formal response that won't be used against her in a deregistration hearing?

The IAA investigator acknowledges receipt of her complaint but cannot advise her on how to respond. She contacts an immigration solicitor who specialises in OISC/IAA defence, quoted £4,500. For a small firm with thin margins on Level 2 visa work, this is significant.

Priya doesn't know: Which specific Code of Standards provisions apply to her situation? Is the client's complaint about competence (she gave wrong advice) or about client care (she didn't warn the client of the risks)? What evidence should she include, file notes, client correspondence, Home Office guidance at the time of the application?

Who receives this

UK immigration advisers registered with the IAA (formerly OISC) at Levels 1–3 who receive complaint investigation notices or registration renewal compliance findings. Primary segment: Level 2 advisers (the largest registration tier) at small to mid-size immigration advice firms. Secondary: Level 1 advisers at community organisations and charities providing immigration advice who receive compliance audit notices on renewal.

Why the agency will not advise you

The IAA's January 2025 rebranding and enhanced enforcement powers create a genuine "why now", the enforcement posture has shifted.

Key facts, with sources

• The Office of the Immigration Services Commissioner (OISC) was renamed the Immigration Advice Authority (IAA) in January 2025 as part of the Border Security, Asylum and Immigration Act 2025 reforms. The IAA regulates all non-solicitor/non-barrister immigration advisers in the UK and has enhanced enforcement powers under the 2025 legislation, including immediate suspension powers and expanded information-gathering authority. The IAA registers advisers at three competency levels: Level 1 (straightforward applications), Level 2 (more complex matters including appeals), Level 3 (complex cases including judicial review and Upper Tribunal). Acting outside one's registration level is a serious compliance breach. Source: Office of the Immigration Services Commissioner — GOV.UK · OISC is now known as the Immigration Advice Authority (IAA)
• Increased powers for the Immigration Services Commissioner (now IAA) were introduced under the Border Security, Asylum and Immigration Act 2025. The Home Office impact assessment notes that the IAA previously did not have a comparable range of tools to the SRA to deter and disrupt those who seek to abuse the immigration advice sector. The 2025 reforms give the IAA new powers including financial sanctions and immediate suspension, tools that will come with a right of appeal to the First-Tier Tribunal. This represents a significant escalation in IAA enforcement capability and is expected to increase the number of formal investigations requiring written responses from registered advisers. Source: Increased powers for the Immigration Services Commissioner: impact assessment — GOV.UK · OISC to IAA Transition 2025 — HJT Training

When to bring in a professional

Self-serve responses fit routine cases: clear facts, amounts a business can absorb, and a deadline still ahead of you. Bring in a licensed professional when the amount at stake is large relative to their fee, the facts are genuinely disputed, criminal exposure is possible, or the deadline has already passed. A short paid consultation to sanity-check your plan is often worth it even when you handle the filing yourself.

All sources for this guide

1. Office of the Immigration Services Commissioner — GOV.UK
2. OISC is now known as the Immigration Advice Authority (IAA)
3. Increased powers for the Immigration Services Commissioner: impact assessment — GOV.UK
4. OISC to IAA Transition 2025 — HJT Training