Timelines for data currently available


Baseline assessment data collection

Pilot Phase:

March - June 2006: UK Biobank Pilot Assessment

Main Phase (baseline assessment):

April 2007: The first assessment centre of the main study opens (includes a touchscreen questionnaire, a range of physical measures and collection of biological samples)

Additional measures incorporated

April 2009:
  • Touchscreen Questionnaire: Hearing test; Cognitive function tests

  • Physical measures: Heel ultrasound (both heels, previously just one); Arterial stiffness

  • 24-hour recall diet questionnaire

August 2009:
  • Physical measures: Eye measures (visual acuity, autorefraction, intraoccular pressure)

  • Blood collection: RNA blood sample; saliva sample

December 2009:
  • Physical measures: Eye measures (Optical Coherence Tomography)

  • Exercise test/ECG

July 2010: Recruitment ends
March 2012: UK Biobank Resource is launched


Timeline of additional data made available to researchers

Additional data made available:

September 2012:
  • Four online 24-hour recall diet questionnaires. The data was collected over the period February 2011 - June 2012

March 2013:
  • Death and cancer registry data for participants in England and Wales available

December 2013:
  • Death and cancer registry data for participants in Scotland

  • Repeat assessment data for 20,000 participants

  • Inpatient hospital data for participants in England

June 2014:
  • Nutrient data from the 24-hour diet recall

  • Inpatient hospital data for participants in Scotland

July 2014:
  • Physical activity monitor data for 30,000 participants

  • Objective measures of built environment for participants resident in Wales and Greater London Area

July 2015
  • Online occupational health questionnaire

October 2015:
  • Imaging data for 5,000 participants

  • Online questionnaire data on cognitive function

March 2016
  • Updated physical activity (accelerometer) data-fields

  • Updated imaging data

  • Updated death and cancer register data

May 2016
  • Updated death and cancer data.

October 2016
  • Updated death, cancer and hospital inpatient data

  • Updated imaging data

February 2017
  • Algorithmically-defined cases of myocardial infarction and stroke

  • Address history data

  • Derived data on body composition from abdominal MRI for some participants

  • Updated imaging data

July 2017
  • Genotyping data for the full cohort

  • Mental health questionnaire data

  • Additional home location coordinates

January 2018
  • Greenspace and coastal proximity data

  • Updated imaging data

  • Updated body composition data from the MRI (for some participants)

March 2018
  • Version 3 of the imputed genetics data

October 2018
  • Online digestive health questionnaire data

  • Indices of Multiple deprivation (IMD) scores

  • 12-lead ECG metrics (imaging assessment)

  • Liver phenotypes from MRI scan (for some participants)

  • Updated imaging data

  • MET score data

  • Returned datasets

March 2019
  • Exome sequencing data for 50,000 participants.

  • Biochemistry assay data - serum and red blood cells assay data for all participants. See here for the list of biomarkers that have been measured.

  • Updated hospital inpatient and death and cancer registry data.

  • Additional summary data fields for hospital inpatient data, including corresponding first recorded diagnosis/procedure date.

  • Algorithmically-derived health outcomes for: Asthma, COPD, Dementia, End stage renal disease, Motor neurone disease, Parkinson's disease.

  • Infectious disease pilot study (10,000 participants).

  • Retinal OCT image slices in PNG format (fields 21017 & 21018 in category 100016).

September 2019
  • Primary care (GP) data for around 45% of the cohort, containing coded clinical data and prescriptions (category 3000).

  • "First occurrence" fields (category 1712) showing the first occurrence of any code mapped to 3-character ICD-10. The data-fields have been generated by mapping:

    • Read code information in the Primary Care data (Category 3000),
    • ICD-9 and ICD-10 codes in the Hospital inpatient data (Category 2000),
    • ICD-10 codes in Death Register records (Field 40001, Field 40002), and
    • Self-reported medical condition codes (Field 20002) reported at the baseline or subsequent UK Biobank assessment centre visit

    to 3-character ICD-10 codes.
  • Freesurfer segmentation data (categories 190-197).

  • The hospital inpatient data has been restructured, and a very small amount of additional data has been added. See Update of HES data - September 2019 for more details.


Please see clinic timelines for operational dates of UK Biobank Assessment clinics.

Click here for future timelines.

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