Quick answer: The two main ways UK Consultants protect themselves against negligence claims are insurance-backed indemnity and MDO (medical defence organisation) membership. Insurance-backed policies are contractual – the insurer is legally bound to pay valid claims up to a stated limit, and are typically claims-made, meaning the policy in force when a claim arises is the one that responds. MDO cover is usually discretionary – members have the right to request support which is provided at the MDO’s discretion rather than by contract, and is typically claims-occurrence, meaning the cover in place when the incident happened responds, regardless of when the claim is later made.
Both models are long-established in UK medicine, and both have genuine strengths. The right choice depends on how much certainty you want, how the two structures behave if you ever switch, and what’s actually included alongside your core cover. Here’s how they compare.
How the two models actually work
Insurance-backed cover is a contract, set out in a formal policy schedule. It clearly states what’s covered, what’s excluded, and what limit applies. Most insurance-backed medical malpractice policies are claims-made, which means they respond based on when a claim is made against you, not when the incident happened. This means your retroactive date and continuous cover matter a great deal over your career.
MDO cover works differently. It’s typically discretionary, meaning the MDO decides on a case-by-case basis whether to assist with a claim, there’s no contractual obligation to pay out. MDOs generally operate on a claims-occurrence basis, so the membership you held at the time of the incident is the one that’s relevant, even if the claim surfaces years later.
The “unlimited cover” claim, examined
MDOs often market their support as unlimited. In practice, discretion could be applied and support could, in principle, be declined. Because there isn’t a contractual limit written into a policy schedule, it’s harder to see or plan around compared with the defined limit in an insurance-backed policy. This is worth understanding clearly, not as a criticism of MDOs, but as a genuine structural difference to factor into your decision.
Pros and cons at a glance
|
Insurance-backed indemnity |
MDO cover |
|
|
Basis |
Contractual obligation |
Discretionary |
|
Cover type |
Usually claims-made |
Usually claims-occurrence |
|
Limit |
Defined, stated in the policy |
Unlimited, but subject to discretion |
|
Legal expenses / regulatory cover |
Typically included, often on a separate limit |
Not typically included in the same way |
|
Public liability |
Typically included as standard |
Not typically included |
|
Certainty |
Payout guaranteed for valid claims within the policy terms |
No contractual guarantee, reviewed case by case |
|
Ongoing management |
Requires attention to retroactive dates and run-off over your career |
Less exposure to retroactive date issues, since cover follows the incident date |
What happens if you switch between the two
This is where the distinction really matters in practice. If you move from an insurance-backed, claims-made policy to an MDO, you lose the retroactive protection that came with your insurance policy, an MDO won’t pick up claims relating to incidents that occurred while you were insured. That means anyone making this move typically needs to do two things: buy run-off cover for the years spent under the insurance-backed policy, and take out new MDO membership going forward. Skipping the run-off purchase can leave a genuine gap in protection for anything that arose during your insured years.
Moving the other way – from an MDO into insurance-backed cover – is more straightforward, since a new insurance-backed policy can typically pick up your retroactive cover going forward.
So which is right for you?
There’s no universally “better” option, it depends on your appetite for certainty versus flexibility, your career stage, and what else you want bundled into your cover (legal expenses, public liability, and so on). Before deciding, it’s worth asking any provider:
- Is my cover contractual or discretionary?
- Is it claims-made or claims-occurrence, and what does that mean if I switch providers later?
- What’s actually included alongside the core cover e.g. legal expenses, public liability, cyber cover?
- If I’m moving from an MDO to insurance, or vice versa, what would I need to buy to avoid a gap in cover?
Frequently asked questions
What’s the main difference between MDO cover and insurance-backed indemnity? Insurance-backed indemnity is contractually obliged to pay valid claims up to a stated limit. MDO cover is typically discretionary, meaning support is granted case by case rather than in line with a contract.
Is MDO cover really unlimited?
MDOs often describe their cover as unlimited, because assistance is discretionary rather than contractual, there’s no defined limit written into a policy schedule the way there is with insurance-backed cover.
What happens to my cover if I move from an MDO to an insurance-backed policy? An insurance-backed policy can typically pick up your retroactive cover, so this move is usually more straightforward than going the other way.
What happens if I move from insurance-backed cover to an MDO?
You’ll generally need to buy run-off cover for your insured years, since an MDO won’t pick up claims relating to incidents that happened while you were insured, alongside taking out new MDO membership.
Does MDO membership include legal expenses or public liability cover?
Typically not in the same way an insurance-backed policy does. These are usually bundled into insurance-backed cover but aren’t standard parts of MDO membership, so it’s worth checking directly with your provider.
Weighing up MDO cover against an insurance-backed policy? Get a quote to see how contractual cover compares for your situation, or request a call back to talk it through with our team.
If you’re reviewing your policy more broadly, see our guide on what to look for in a medical malpractice policy and broker service, browse more on our blog, or check our FAQs.
