The family of 30-year-old Greek heiress Marissa Lemos, who died shortly after being discharged from an NHS hospital with symptoms from a "toxic insect bite," is demanding accountability more than a year later. Found dead by her housekeeper on September 11, 2025, in her London home, Marissa had been admitted to UCLH earlier that day but was discharged without seeing an NHS doctor. Her parents, Bessy and Diamantis Lemos, are frustrated with the lack of answers regarding the cause of death and are considering legal action against the hospital for alleged clinical negligence.
Written by the local model on 2026-09-17,
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The grieving family of a Greek heiress who was found dead hours after being discharged from an NHS hospital with a 'toxic insect bite' have demanded someone is held accountable a year after her death.
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someone → see → death
Marissa Lemos, 30, was tragically discovered in bed by a housekeeper at the townhouse she lived in with her shipping tycoon father and mother in upmarket Knightsbridge, central London, on September 11 last year.
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she → discover → September
Two days earlier, Marissa was bitten by an insect and later took herself to a private hospital on London's Harley Street after developing symptoms of itching, dizziness, a high temperature and signs of an infection.
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Marissa → bite → infection
Marissa – who had recently overcome breast cancer – was rushed to A&E at University College London Hospital (UCLH) in an ambulance on September 10, 2025, due to the severity of her condition.
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who → overcome → condition
However, her family say that she was discharged without ever being seen by an NHS doctor – having only been assessed by trainee medics.
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she → say → medics
In one of her last texts, she told a friend: 'Nobody is checking up on me, nobody is coming.'
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nobody → tell → me
After being discharged, Marissa returned home at around 8pm, took her antibiotics and went to bed.
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Marissa → discharge → bed
The following afternoon, the family housekeeper found her dead in her bed.
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housekeeper → find → bed
The wealthy Lemos family – one of the biggest dynasties in the Greek shipping industry – have laid bare their year of torment to the Daily Mail, and are vowing to take legal action over the alleged clinical negligence.
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family → lay → negligence
Marissa's mother, Bessy, and her shipping tycoon father, Diamantis, were told the initial diagnosis of her symptoms was 'toxic effect of venom' caused by an 'animal or insect bite'.
Yet as they held an emotional memorial to mark a year since their daughter's death in Athens last Friday, the family have still not been given an official cause of death or any answers as to why she was discharged when she was so visibly unwell.
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she → tell → death
Speaking exclusively to the Daily Mail, Ms Lemos said: 'We are very frustrated.
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We → speak → Mail
We cannot believe we are in the UK in 2026 and no one can tell us how our daughter died when she was hospitalised a few hours before her death.
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she → believe → death
'We will never have peace unless we find out the cause of her death and who is to blame for this catastrophic outcome.
'
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who → have → outcome
We've been left in the dark and the system needs to be changed.
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system → leave → dark
My husband hopes that other people like Marissa can be saved.
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people → hop → Marissa
But I have lost my child.
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I → lose → child
Can I bring her back?
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I → bring → her
No - and we are still waiting.
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we → wait → ?
Marissa Lemos, 30, was tragically found dead by a housekeeper at the family's London townhouse on September 11 last year
Marissa is pictured with her mother Bessy and her father Diamantis.
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Marissa → find → mother
The wealthy Lemos family descend from a powerful line of Greek shipping magnates
Ms Lemos said that they have been battling for answers 'since day one.'
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they → descend → day
It took nearly two weeks for a post-mortem to be carried out on Marissa.
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mortem → take → Marissa
This led to them having to delay the funeral and burial of their daughter in Athens.
But after a year of waiting for the post-mortem results, they were told that Marissa's cause of death could not be determined.
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cause → lead → death
The family say they have not been given a copy of the results despite repeated efforts through their lawyers.
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they → say → lawyers
They are also still awaiting toxicology testing that was supposedly completed on June 25 this year.
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that → await → June
The Met Police have since told the family that there are microbiology tests that need to be carried out, which requires a specialist to interpret the results.
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which → tell → results
The coroner will then determine if an inquest is required.
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inquest → determine → ?
'We have been very angry and furious since day one, since Marissa left the world,' Ms Lemos said.
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Lemos → leave → world
We cannot believe this has happened.
'
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this → believe → ?
They should have kept her that night.
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They → keep → her
After all these tests, we are here today after a year and we still don't know the cause of her death.
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we → know → death
'What would have happened if Marissa could have stayed on that night at the hospital?
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Marissa → happen → hospital
Obviously she would have been saved.'
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she → save → ?
The family marked Marissa's one-year anniversary with a memorial service where she is buried in Athens last Friday.
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she → mark → Athens
'We were looking at her grave thinking this is totally appalling and unbelievable what has happened to us,' Ms Lemos said.
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Lemos → look → us
'She did everything by the book.
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She didn't stay helpless in her house and not asking for help.
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She went there in order for the people with the expertise to deal with it and they did nothing.
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they → go → nothing
They just did some tests and let her go.
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her → do → tests
A few hours later, she passed away.'
Marissa, a theatre actress, was born and raised in London, living with her parents at their townhouse in Knightsbridge.
She had recently returned to the capital after a summer holiday with her family on the Greek resort island of Porto Cheli, where she was 'perfectly alright'.
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she → pass → Cheli
But she began feeling unwell on September 9, 2025, developing dizziness, itching, a high temperature and other signs of infection, which proceeded to get worse in the night.
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which → begin → night
…and 29 more, not listed.
The Aporia
