• GL
Choose your location?
  • Global Global
  • Australia
  • France
  • Germany
  • Ireland
  • Italy
  • Poland
  • Qatar
  • Spain
  • UAE
  • UK

"Perpetrators pursuing payments"

12 November 2020

The doctrine of illegality protects the NHS but not solicitors.


On 30 October the Supreme Court handed down two judgments dealing with the complete defence of the doctrine of illegality (ex turpi causa for those who remember learning the Latin!).  In Ecila Henderson v Dorset Healthcare University NHS Foundation Trust [2020] UKCS 43 ('Henderson) the Supreme Court decided in favour of applying the defence, protecting the NHS from a requirement to pay out damages to a patient convicted of manslaughter by reason of diminished responsibility. In contrast, in Stoffel & Co. (Appellant) v Grondona (Respondent) [2020] UKSC 42 ('Stoffel') the defence was denied, enabling a client of negligent solicitors to bring a damages claim against them, even though that client had been party to the illegal activity of mortgage fraud.

Understanding the Henderson decision

The circumstances leading up to the crime are tragic; Ecila Henderson, a paranoid schizophrenic was living in the community under the care of Dorset Healthcare University NHS Foundation Trust when she turned on her mother on 25 August 2010, stabbing her 22 times and inflicting fatal injuries. The Trust admitted that their care for the patient was negligent, the deterioration in Ecila's mental health should have resulted in her being returned to hospital and had this occurred, her mother would not have been fatally wounded.

The Trust, however, disputed responsibility for any damages after the patient's criminal act deploying the defence of illegality.

The Supreme Court followed the approach applied at first instance and by the Court of Appeal, rejecting the patient's argument that irrespective of her criminal offence she should be entitled to recover general damages for her loss of liberty/amenity, and special damages for her loss of her share in her mother's estate and costs of therapy/care.

The Supreme Court found that Henderson was not distinguishable from the leading authority of Gray v Thames Trains [2009] nor was the patient assisted by the case of Patel v Mirza [2016] involving a claim for unjust enrichment, in which the defence of illegality failed.

When considering the 'trio of considerations' that Patel requires it was relevant that:

  • The offence the patient committed was significant 
  • There were no other public policy considerations to warrant allowing a patient to claim in such circumstances – the message to the public that 'killing never pays' should not be diluted. 
  • Giving weight to public policy was proportionate, the public would not expect NHS funding to be diverted to compensate a killer and to do so would not encourage better care from the NHS.

Comparing the determination in Stoffel 

This was a claim involving mortgage fraud by Stoffel & Co's client, Ms. Grondona. The fraud only became apparent when Ms. Grondona defaulted on the mortgage, the lender sought to recover and it then emerged that Ms. Grondona's solicitors had negligently failed to register the transfer of the property to her. Ms. Grondona therefore brought a claim for professional negligence against her solicitors.

At first instance and before the Court of Appeal Ms. Grondona was successful. The Supreme Court similarly agreed that Stoffel & Co. could not deploy the defence of illegality to protect them from her claim in negligence.

Applying the trio of considerations required by Patel v Mirza [2016] the findings were:

  • Whilst it was recognised that mortgage fraud was serious it did not involve loss of life
  • Fraudsters were unlikely to be deterred if the courts held that perpetrators of such fraud could not claim against negligent solicitors
  • Victims of solicitors' negligence should have access to redress and it would not be proportionate to deny compensation in such circumstances


These contrasting decisions illustrate how the application of the illegality defence is much more nuanced and, of course, fact sensitive and that the courts are willing to consider much broader implications when considering whether a claim should be barred by reason of illegality.  

The underlying principle of the illegality defence is that the punishment metered out via the criminal law should not trigger entitlement to rewards under the civil law, to do so would be inconsistent with fundamental principles and threaten the integrity of the justice system.

Having said that there are clearly scales of criminal activity – mortgage fraud is not the same as taking a human life, as a result, there is a need for the courts to consider whenever such a defence is deployed when policy reasons should prohibit a claim and when a civil claim should be permitted. 

For further commentary on the Stoffel decision please see our recent article Mortgage Fraudster succeeds in the Supreme Court.

Should you have any comments or queries arising from the above, please contact Vicki Swanton.

Further Reading

We use cookies to give you the best user experience on our website. Please let us know if you accept our use of cookies.

Manage cookies

Your Privacy

When you visit any web site, it may store or retrieve information on your browser, mostly in the form of cookies. We mainly use this information to ensure the site works as you expect it to, and to learn how we can improve the experience in the future. The information does not usually directly identify you, but it can give you a more personalised web experience.
Because we respect your right to privacy, you can choose not to allow some types of cookies. Click on the different category headings to find out more and change permissions. However, blocking some types of cookies may prevent certain site functionality from working as expected

Functional cookies


These cookies let you use the website and are required for the website to function as expected.

These cookies are required

Tracking cookies

Anonymous cookies that help us understand the performance of our website and how we can improve the website experience for our users. Some of these may be set by third parties we trust, such as Google Analytics.

They may also be used to personalise your experience on our website by remembering your preferences and settings.

Marketing cookies

These cookies are used to improve and personalise your experience with our brands. We may use these cookies to show adverts for our products, or measure the performance of our adverts.