Immigration adviser (OISC / IAA) professional indemnity insurance — the UK requirement

Immigration advice in the UK is a reserved activity regulated by the Immigration Advice Authority (formerly the Office of the Immigration Services Commissioner). Advisers at all levels of authorisation must hold PI insurance. This reference sets out the framework.

The regulatory position

Under section 84 of the Immigration and Asylum Act 1999, providing immigration advice or services in the UK is a reserved activity restricted to persons authorised by an approved body. The regulator was the Office of the Immigration Services Commissioner (OISC) and, following the Illegal Migration Act 2023 reforms, became the Immigration Advice Authority (IAA) in June 2024.

Advisers can be authorised in one of four regulatory routes:

• By the IAA directly (three levels of authorisation covering advice complexity).
• By the Solicitors Regulation Authority (as solicitors — covered by SRA MTC).
• By the Bar Standards Board (as barristers).
• By CILEx Regulation (as legal executives — see our CILEX PI reference).

This page focuses on the IAA route. Advisers regulated via the SRA, BSB or CILEx are covered by their profession-specific PI framework.

The IAA PI requirement

The IAA (formerly OISC) requires every regulated organisation providing immigration advice to hold PI insurance meeting the regulator's minimum specification. The minimum limit is currently £250,000 per claim, on a "any one claim" basis. Cover must respond to civil liability arising from the provision of immigration advice and services.

Voluntary sector providers may be able to rely on umbrella cover held by their host organisation, but the IAA specifies that the umbrella policy must expressly cover the regulated immigration activity.

Where immigration PI is unusually risky

Immigration advice claims tend to be higher-frequency and lower-quantum than other legal-services claims, with two exceptions:

• Failed Tier 1 / Tier 2 / skilled-worker sponsorship applications where the client (or the employer sponsor) has suffered material commercial or life-plan loss — these can produce large individual claims.
• Missed limitation periods — First-tier Tribunal appeal deadlines, judicial review time limits, upper-tier appeals. A missed deadline is often a strict-liability drafting error and hard to defend.

Given the reputational sensitivity of immigration work, insurers underwrite this sector cautiously — a specialist broker adds value at renewal.

Claims patterns

• Missed appeal deadlines and judicial-review time limits.
• Advice on visa route that turns out to be materially flawed.
• Miscalculation of continuous residence for indefinite-leave-to-remain applications.
• Sponsorship-licence errors where the employer client suffers loss of key hires or fines.
• Data-protection breaches in relation to biometric or asylum-related information.

Run-off cover

The IAA requires that on cessation of regulated activity an adviser or organisation maintains PI cover for at least three years, or such longer period as the risks of the practice require. This is a shorter minimum than the SRA (six years) or ARB (adequate and appropriate). Advisers with material historical files may want to hold six years' run-off notwithstanding the three-year minimum, aligned with the Limitation Act 1980 primary period. See our limitation-periods reference for the fifteen-year long-stop.

Placement in practice

Immigration PI is written by a small number of specialist UK insurers plus a handful of Lloyd's syndicates. Premiums vary widely depending on:

• Level of IAA authorisation held (Level 1 through Level 3).
• Fee income and case volume.
• Client mix (corporate sponsorship work versus asylum and appeals).
• Advisory versus casework balance.
• Prior claims history and IAA regulatory record.

Related Apex references

• Solicitors PI Insurance UK Guide 2026 — sister-profession context
• Limitation periods in professional negligence
• Run-off cover explained