Corporate Health Insurance

Corporate Health Insurance For 250+ Employees

Updated July 2026 Rated Excellent By Darren Lewis, Health Insurance Specialist

Once your business reaches 250 employees, health insurance stops being a simple SME add-on and becomes a genuine corporate scheme, with dedicated large-group products, simplified underwriting, and pricing that reflects the scale of your workforce.

Major insurers run separate products specifically for groups this size, Aviva's Optimum and Bupa's Corporate Select are both built for 250+ employees, distinct from their standard small business plans. We'll help you compare the right one for your organisation.

Large corporate team discussing employee health insurance for 250+ staff
Built For Scale

Not The Same Product As Small Business Cover

Major insurers run genuinely separate products once you cross the 250-employee threshold, not just a bigger version of the same SME plan.

1-249 Employees

SME Products

Aviva Solutions and Bupa Select are built for smaller groups, with more standardised cover levels and typically full or moratorium underwriting applied per employee.

250+ Employees

Corporate Products

Aviva Optimum and Bupa Corporate Select are built specifically for large groups, with more tailored benefit design and simplified underwriting options better suited to a big workforce.

Compare Corporate Health Insurance From The UK's Leading Insurers

Aviva
AXA Health
Bupa
Vitality
WPA
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Provider Comparison

Best Corporate Health Insurance Providers Compared

The table below compares leading UK insurers using independent ratings and their large-group scheme options.

ProviderLarge-Group ProductBest ForDefaqtoTrustpilot
Aviva HealthOptimum (250+)Overall Value★★★★★4.5/5
BupaCorporate Select (250+)Largest Hospital Network★★★★★4.4/5
AXA HealthCorporate schemes availableFlexible Cover★★★★★4.1/5
Vitality HealthCorporate schemes availableRewards And Perks★★★★★4.0/5
WPACorporate schemes availableCustomer Service★★★★★4.6/5

See our full insurer-by-insurer reviews for a deeper breakdown of each provider.

Why Consider It

Why Consider Corporate Health Insurance?

At scale, the benefits compound across your entire workforce.

Reduce Sickness Absence

Faster access to treatment across your whole workforce means less time lost to NHS waiting lists.

+

Attract And Retain Talent

Health insurance consistently rates as one of the most valued employee benefits in the UK.

Mental Health At Scale

Employee Assistance Programmes and self-referral pathways support your whole team, not just a few.

£

Tax-Efficient Benefit

Premiums are typically a deductible business expense, a tax-efficient way to invest in your people.

Worth Knowing

Simplified Underwriting At Scale

One genuine advantage of insuring a large group is access to simplified underwriting options that smaller schemes often can't get. Medical History Disregarded (MHD) underwriting lets employees join without completing individual medical questionnaires, removing a significant piece of admin and friction when rolling out cover across a large workforce.

This isn't available to every scheme, and typically requires a minimum group size well below the 250-employee threshold, but it becomes increasingly accessible and cost-effective the larger your group, making it a genuine advantage of scale worth discussing with a broker.

Large corporate office team benefiting from simplified health insurance underwriting
Worth knowing

Some insurers also offer an NHS Cash Benefit as part of larger schemes, a fixed payment (for example, around £100 a night) if an employee uses the NHS for certain treatments like radiotherapy or cancer surgery instead of going private. Worth asking about when comparing.

Coverage Detail

What's Covered?

Cover varies by provider and plan, here's what's typically included.

Usually Standard

  • Hospital treatment, operations and surgery
  • Specialist consultations
  • Diagnostic tests and MRI/CT/PET scans
  • Private cancer treatment
  • 24/7 Digital GP access

Optional

Typical Exclusions

Cost

What Affects The Cost?

Per-employee cost often works out lower at scale, but these factors still matter.

Workforce Age Profile

An older average workforce age increases the overall premium.

Cover Level

More comprehensive cover, and more optional benefits, costs more per employee.

Policy Excess

A higher excess per claim can meaningfully reduce the overall scheme cost.

Hospital List

A wider national list including central London hospitals typically costs more.

Underwriting Type

Simplified underwriting options can affect both cost and speed of rollout.

Company Locations

Where your teams are based across the UK can affect regional pricing.

Switching Made Easier

Can We Switch Without Losing Cover For Existing Conditions?

Often, yes, and it matters more the larger your workforce, since more employees means more existing conditions already accepted under your current scheme.

Continued Personal Medical Exclusions (CPME) means that if a new insurer agrees to match your current scheme's terms, conditions already accepted for any employee can continue to be covered, without restarting underwriting for your whole workforce.

1

Your new insurer reviews your scheme's current terms and any accepted conditions.

2

If they agree to match them, those conditions transfer across under CPME.

3

Anything not previously covered is underwritten as normal.

Comparing corporate health insurance renewal options

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FAQs

Corporate Health Insurance FAQs

What counts as corporate health insurance vs small business cover?

Most insurers class corporate schemes as 250 or more employees, with dedicated products like Aviva Optimum and Bupa Corporate Select, built differently from their standard SME plans for smaller groups.

Does cost per employee reduce at larger group sizes?

Often yes, larger groups can access more competitive per-employee pricing and simplified underwriting options that smaller schemes typically can't, though your workforce's age profile and chosen cover level still matter most.

What is Medical History Disregarded underwriting?

It lets employees join a scheme without completing individual medical questionnaires, reducing admin and friction when rolling out cover across a large workforce. Availability depends on group size and insurer.

Can employees add their family to a corporate scheme?

Often yes, many corporate schemes allow employees to add a partner and children, usually at an additional cost either to the employee or the employer, depending on how the scheme is structured.

Are pre-existing conditions covered for our workforce?

Usually excluded initially for new schemes, depending on the underwriting method chosen. If you're switching insurer, Continued Personal Medical Exclusions (CPME) can sometimes let you keep cover for conditions already accepted under your current scheme.

Do brokers charge a fee for corporate health insurance advice?

No, brokers are paid commission by the insurer for a successful introduction, so advice is free to your business, with no impact on your premium.

Related Guides

Explore More Health Insurance Guides

Whether your business is smaller than 250 employees, or you're comparing the wider market.

Business Health Insurance

See our general business health insurance guide.

Small Business Health Insurance

Under 250 employees? See our small business insurer reviews.

Business Renewals

Already covered? See our business renewal guide.

Best Health Insurance Reviews

Compare leading UK insurers side by side.

Mental Health Cover

Compare mental health support across insurers.

Sources & Disclaimer

Written and reviewed by: Darren Lewis, health insurance specialist and founder of Compare My Health Insurance. Last reviewed: July 2026. Next scheduled review: January 2027.

Sources: Published insurer policy documentation on large-group corporate schemes, independent UK market analysis, and broker experience from Compare My Health Insurance's specialist partners.

Compare My Health Insurance works with FCA-regulated broker partners and may earn a fee when you take out a policy through our service. This does not affect our editorial content above. Any information on this page is for general information only and should not be considered financial advice, regulated advice or a personal recommendation. Suitability depends on your organisation's individual circumstances, needs and budget.

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