CLOCS-2 builds on CLOCS-1 to validate findings across a large UK population and additional cancer types (Bladder, colorectal (bowel), endometrial, liver, oesophageal, ovarian, pancreatic, stomach, uterine and vulval).

Study aims and objectives

To assess whether shopping patterns can indicate early symptoms of the cancers mentioned above, we are recruiting 2900 individuals in this larger study (1450 healthy people and 1450 cancer patients) in the UK.

Who Can Take Part

  • Adults aged 18+ living in the UK, registered with an NHS GP
  • Primary cardholders of Tesco Clubcard or Boots Advantage Card
  • Either recently diagnosed with one of 10 cancers or no diagnosis in the last 6 years


CLOCS 2 Team

Professor James Flanagan

Dr Hannah Brewer

Dr Yasemin Hirst

Dr Yasemin Hirst
Co-investigator, University of Lancashire

Yuscah Pondeca

Yuscah Pondeca
Project Manager

Dr Sima Toopchiani

Dr Sima Toopchiani
Research Associate

Dr Saphsa Codling

Dr Saphsa Codling
Research Associate

Kevin Horeau

Kevin Horeau
PhD Candidate