Our Future Health, the 'largest' health research programme in the UK, is set to open 19 new clinical sites this month- including one in Bicester.
This will bring the total number of clinics to 167.
Residents in Bicester are among those who will see mobile clinics being set up in supermarket car parks.
With a focus on transforming the prevention, detection and treatment of conditions like dementia, cancer, diabetes, heart disease and stroke, a detailed picture of the population's health will be drawn by gathering up to five million volunteers.
The programme is sending invitations to people who live near the clinics.
Anyone aged 18 and above, who chooses to partake in the programme, will see clinic doctors for a blood sample and physical measurement tests.
These participants will also receive health data such as blood pressure and cholesterol levels.
The long-term plan for the programme includes offering feedback about the risk of certain diseases and being a part of research studies.
Any adult can join the programme by signing up online, completing an online health questionnaire, and scheduling a brief clinic appointment.
The clinic locations can be seen on an interactive map on the organisation's website.
Volunteer Venkat Venkatakrishnan, 40, from Enfield, said: "I know I’m predisposed to having high cholesterol because my father and grandfather, three or four generations of my family, have all had this, as well as heart disease.
"If my contribution helps people like me to recognise any problems related to this at an earlier stage, that would be brilliant.
"Prevention is always best – it has better outcomes, improves quality of life, and is often cheaper in the long run."
Dr Raghib Ali, chief executive and chief medical officer of Our Future Health, said: "We’re now seeing one person sign up to Our Future Health every minute, which is a fantastic success for our programme.
"We want to see this continue, which is why we’re opening new clinics each month so people from across the UK can book their appointment to join the programme.
"We want to help everyone to be able to live longer, healthier lives so we need people of all ages and backgrounds, from every part of the country to take part."
Our Future Health is a collaboration between the public sector, life sciences companies, and UK health charities.
You can learn more about the health research programme, and sign up to it, by visiting the website at ourfuturehealth.org.uk.
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