The Oxygen Centre's website describes the Nottingham Multiple Sclerosis Therapy Centre as a UK-based HBOT facility (Nottingham, UK; 0115 950 5991). The center pressurises chambers between 1.5 and 2 ATA — explicitly noting that 'mild' HBOT (under 1.5 ATA) is considered inappropriate dosing by the British Hyperbaric Association and is ethically problematic. Treatment plans typically consist of 15 hour-long sessions over a month, followed by weekly to monthly top-up sessions to maintain plasma oxygen saturation. Chambers are similar to diving compression chambers and hold up to seven people each. Although founded for multiple sclerosis, the center now offers a Long COVID program with trial sessions available. The site distinguishes the center's medically supervised approach from soft-shell consumer HBOT.