High-Value Life Assurance Underwriting: What to Expect as an HNW Applicant
Applying for a £5 million life assurance policy is a fundamentally different process from applying for a £500,000 one. The stakes for the insurer are higher, and the underwriting process — the assessment of the risk being insured — is correspondingly more rigorous. Medical examinations, detailed financial questionnaires, reinsurer involvement, and potentially lengthy delays are all features of the HNW underwriting experience that applicants should understand and prepare for before they begin.
This guide explains what happens during the underwriting process for high-value life assurance, what underwriters are looking for (medically and financially), and how to navigate the process efficiently as an HNW applicant.
As of 2026, underwriting practices, non-medical limits, and the availability of reinsurance capacity vary between carriers and in different jurisdictions. This guide is informational and based on general market practice. Individual outcomes will vary.
What Is Underwriting?
Underwriting is the process by which an insurer evaluates the risk of insuring a particular individual and determines the premium and terms on which they are willing to provide cover. For life assurance, underwriters assess two broad categories of risk:
Medical underwriting: Assessment of the applicant's current health, medical history, family medical history, lifestyle (smoking, alcohol, extreme sports), and BMI — factors that affect life expectancy.
Financial underwriting: Assessment of whether the sum assured applied for is financially justifiable — i.e., whether the insurable interest is genuine and the sum of all life assurance the applicant holds is proportionate to their financial need and circumstances.
Both types of underwriting become significantly more intensive at high sum-assured levels.
Non-Medical Limits (NMLs) and When Medical Evidence Is Required
Every insurer sets a non-medical limit (NML) — the maximum sum assured they will provide without requiring a medical examination. Below the NML, cover is issued on the basis of a detailed health questionnaire and the applicant's signed declaration that the answers are true and complete.
As of 2026, NMLs in the UK market vary by insurer and by age:
- For applicants aged under 40, some insurers set NMLs of £1 million to £2 million
- For applicants aged 40 to 50, NMLs typically range from £750,000 to £1.5 million
- For applicants aged 50 to 60, NMLs typically range from £500,000 to £1 million
- Above age 60, NMLs are substantially lower — often £250,000 to £500,000
For any sum assured significantly exceeding the NML, the insurer will require medical evidence. The type and depth of evidence required escalates with the sum assured:
| Sum Assured Level | Typical Medical Requirements |
|---|---|
| £500,000 – £1 million | GP report (Attending Physician Statement), blood screen |
| £1 million – £2.5 million | GP report, full blood panel, urinalysis, ECG |
| £2.5 million – £5 million | All of above plus cardiac stress test, specialist reports if relevant |
| £5 million – £10 million | All of above plus comprehensive medical examination by insurer-appointed doctor |
| £10 million+ | All of above plus reinsurer involvement in underwriting; may require independent specialist examinations |
These thresholds are indicative — different insurers apply different standards, and the specific requirements depend on the applicant's age, health history, and the specific carrier's underwriting philosophy.
The Medical Underwriting Process
The Attending Physician Statement (APS)
For most large applications, the insurer will request a report from the applicant's GP (or primary care physician). This report — often called an Attending Physician Statement — covers the applicant's medical history, any diagnoses, prescriptions, and the GP's general assessment of the applicant's health.
For internationally mobile applicants who do not have a regular UK GP, this can be complicated. Insurers may accept reports from overseas physicians but will typically want a report from whoever the applicant's regular doctor is. If no regular doctor exists (common for younger internationally mobile HNW individuals), the insurer may require a comprehensive medical examination instead.
The Medical Examination
For large sums, the insurer arranges a medical examination by a physician of their choice — typically a specialist who works regularly with the insurer and understands the underwriting context. The examination typically covers:
- Height, weight, and BMI
- Blood pressure and pulse
- Blood tests (full blood count, lipid profile, liver and kidney function, glucose, HIV, hepatitis B and C)
- Urinalysis
- ECG (resting and sometimes stress)
- Cotinine test (to confirm non-smoker status)
For older applicants or those with cardiac risk factors, additional cardiac investigations may be requested — including echocardiogram, stress echocardiogram, or coronary CT angiography.
Practical tip: Ensure you are well-rested and hydrated before a blood test; fasting for 8 to 12 hours before the blood test will give more accurate lipid and glucose results. Avoid heavy alcohol consumption in the week before any medical examination.
Family Medical History
Insurers are interested in significant heritable conditions in first-degree relatives (parents, siblings) — particularly early-onset heart disease, cancer, or conditions with a known genetic component. For very large sums, adverse family history may result in a loading (higher premium) or a specific exclusion, even if the applicant themselves is in good health.
Lifestyle Disclosures
Smokers pay significantly higher premiums than non-smokers. Insurers define "smoker" as anyone who has smoked tobacco products (including e-cigarettes and nicotine replacement) in the last 12 months (some carriers require 24 months). Ex-smokers who gave up more than 12 months ago typically pay non-smoker rates, but must disclose their smoking history — the insurer may apply a loading for recent ex-smokers or those with a very long smoking history.
Extreme sports and high-risk occupations may attract loadings or specific exclusions. Common examples include private aviation (particularly pilot-in-command activity), motorsport, deep-sea diving, high-altitude mountaineering, and certain military or security roles. International travel to regions with significant personal security risk (parts of Africa, the Middle East, or areas of conflict) may also affect terms.
Financial Underwriting
Why Insurers Assess Financial Need
Life assurance policies cannot be used as a vehicle for speculative financial gain — the principle of insurable interest requires that the sum assured is proportionate to the genuine financial loss arising from the life assured's death. An individual applying for £20 million in life cover who has assets of £5 million and no business or personal financial dependants would not pass financial underwriting — the insurer would conclude there is no genuine need for the cover and decline the application or reduce the sum.
Aggregation Across All Carriers
Financial underwriters consider the total sum assured across all life assurance policies the applicant holds, not just the policy being applied for. Most carriers' proposal forms ask: "What life assurance do you currently hold, including this application?"
An applicant with £3 million already in force and applying for a further £5 million will need to justify a total of £8 million in life cover. For someone with a large estate, substantial business interests, or significant borrowings, this may be straightforward. For someone with a more modest financial profile, it will require explanation.
What Financial Evidence May Be Required
At large sum assured levels (typically £5 million+), insurers may request:
- Recent personal or business accounts (last two to three years)
- Evidence of outstanding borrowings (mortgage statements, corporate debt schedules)
- Details of business interests and their value
- Trust deeds (where the life policy is being written into trust for IHT planning)
- Letter from an accountant or solicitor confirming the financial planning context
Common Justifications for Large Sums Assured
- IHT planning: A large death benefit matching a quantified IHT liability is one of the most common and most readily accepted justifications.
- Business loan protection: Evidence of outstanding commercial loans is a strong justification.
- Key person cover: Documentation of the key person's financial contribution to the business.
- Income replacement: A multiple of earned income, particularly for high-earning professionals whose family is dependent on that income.
- Mortgage and debt protection: Evidence of outstanding property loans or personal guarantees.
What Happens When a Risk is Non-Standard?
If the underwriting assessment reveals a medical or financial risk that exceeds standard terms, the insurer can respond in several ways:
Standard terms: The insurer accepts the application at the advertised premium rate.
Premium loading: The premium is increased above the standard rate to reflect the elevated risk. A rating of "+50%" means the premium is 1.5 times the standard premium.
Exclusion: The insurer excludes a specific condition or cause of death from the policy. For example, a policy placed after a cancer diagnosis might exclude death arising from that cancer.
Postponement: The insurer defers a decision, typically pending further medical information or a specified period of stability (e.g., "postpone for 12 months pending cardiac review").
Decline: The insurer is unwilling to provide cover at any price for the specific risk.
If one insurer declines or offers unfavourable terms, another insurer — or a specialist non-standard underwriter — may offer better terms. The market for impaired risk large sum assured policies is niche but active.
Reinsurer Involvement
For very large sums assured, the insurer cedes part of the risk to a reinsurer — a wholesale insurer that assumes risk from primary insurers. Reinsurers such as Munich Re, Swiss Re, Hannover Re, and RGA set their own underwriting guidelines, and the insurer must obtain their agreement for the risk.
Reinsurer involvement can add time to the underwriting process — sometimes several weeks — and the applicant may need to undergo additional examinations at the reinsurer's request.
How to Prepare: Practical Tips for HNW Applicants
Disclose everything fully and accurately. Non-disclosure of material information (medical or financial) can give the insurer the right to void the policy and refuse a claim, even years after policy inception. The Financial Ombudsman Service has ruled in insurers' favour in numerous non-disclosure cases where the omitted information was clearly relevant.
Compile your medical records in advance. Obtain a summary of your medical history from your GP before the application. Knowing what is in your records allows you to complete the proposal form accurately and avoid inadvertent omissions.
Appoint a specialist adviser. A protection specialist with experience of large sum assured applications can coordinate the submission, prepare the financial justification, and manage the communication with the insurer's underwriting team. This typically accelerates the process and improves outcomes.
Be patient. Large sum assured applications routinely take four to twelve weeks. Chasing the insurer frequently does not usually accelerate the process; ensuring all information is submitted promptly at each stage does.
Apply in good health. Life assurance premiums are fixed at inception. Applying before any health concerns emerge — rather than when a condition has already been diagnosed — allows standard terms. Review life cover needs during routine health checks.
How Global Investments Can Help
Global Investments advises HNW individuals on life assurance applications at all levels of sum assured, including complex large-sum applications where medical and financial underwriting is extensive.
We prepare the financial justification for the sum assured, manage the medical evidence requirements, coordinate with insurers and reinsurers, and — where one insurer offers unfavourable terms — identify alternative carriers who may accept the risk on better terms.
For internationally mobile applicants with complex medical histories or no regular UK GP, we have experience navigating the overseas medical evidence process and working with specialist underwriters who serve internationally mobile HNW clients.
Contact Global Investments to discuss your life assurance requirements.
Underwriting decisions are made by insurers on the basis of individual risk assessment. Outcomes cannot be guaranteed. This guide is informational only.
This guide is for general information only and does not constitute financial or insurance advice. Policy terms, premium rates, and insurer eligibility criteria change — always verify current terms with a qualified independent adviser before taking out any policy.