London Clinic Treats Cancer Patients by Gassing Them With Bleach in Plastic Bags
A London clinic run by a former ice cream maker is using a dangerous method: sealing patients in plastic bags and exposing them to chlorine dioxide gas. Health authorities warn there is no scientific evidence for this treatment and it poses serious risks.
Description
The Battersea Park Clinic in London, operated by Alastair Jessel, a former artisanal ice cream maker, treats stage 4 cancer patients with a procedure involving sealing them naked from the neck down in a plastic bag and gassing them with chlorine dioxide, an industrial oxidizing bleach. Jessel himself admits the procedure is "dangerous."
Origin of the Method
Jessel uses the so-called "Protocol G," developed by German Andreas Kalcker, a long-time promoter of chlorine dioxide as a miracle cure for various diseases including cancer, HIV, and COVID-19. The protocol involves direct exposure to undiluted gaseous chlorine dioxide. Jessel said in a podcast that when he asked a private group of chlorine dioxide influencers if anyone had tried Protocol G, no one responded.
Scientific Evaluation
Caroline Geraghty, senior specialist information nurse at Cancer Research UK, states there is currently no scientific evidence that chlorine dioxide gas exposure is safe or effective for treating cancer. She warns that using unproven remedies instead of medically approved treatments can have dangerous side effects and interfere with proper care.
Jessel's Background
Jessel has no medical background—he was a stockbroker, owned a tile business, and made ice cream. In December 2021, he registered the clinic, initially offering scalar wave therapy, an unproven pseudoscientific concept. He later added red-light therapy and a hyperbaric oxygen chamber, which tennis star Novak Djokovic used during a visit last summer. A Facebook post with Djokovic has been deleted, but a personal Threads post remains.
Regulatory Actions
In December 2024, the clinic was raided by the Food Standards Agency and Trading Standards. Bottles of chlorine dioxide were found on display; a subsequent visit found none for sale, and an employee told an undercover officer the clinic no longer offers the treatment. However, the clinic's Facebook page still promotes chlorine dioxide.
Patient Experience
Natalie Passant, whose father was treated by Jessel using scalar waves, says her father spent about $5,000 on treatments before dying in February 2025. She accuses Jessel of manipulating vulnerable people away from medical advice. Jessel denied encouraging her father to forgo radiotherapy, but in podcasts he talks openly about treating and curing clients.
Legal Context
The UK's Cancer Act 1939 prohibits non-medical professionals from advertising cancer treatments. Several regulatory bodies, including the Care Quality Commission and the Medicines and Healthcare Products Regulatory Agency, did not respond to requests for comment.
