Using text message reminders and culturally-tailored telephone calls to promote participation in bowel cancer screening (TOPPS)

INTERVENTION: Participants will be randomised using computerised, pseudo‐random, number allocation (performed using the 'RAND' function within Excel). Individuals will be randomised in equal proportions (1:1:1) to receive either: 1. No intervention (‘usual care only’), 2. A text‐message reminder, 13 weeks after invitation, with additional text‐message reminders at 15, 17 and 19 weeks, if there is no response (‘usual care + text message reminder(s)), or 3. A text‐message reminder, 13 weeks after invitation, followed by PN calls at 15, 17 and 19 weeks, if there is no response (‘usual care + a text message reminder + PN telephone call(s)) CONDITION: Bowel cancer screening ; Cancer PRIMARY OUTCOME: Participation in screening, defined as returning a completed FIT kit, within 24 weeks of dispatch SECONDARY OUTCOME: The proportion of participants who receive a positive bowel cancer screening test kit result, within 26 weeks of being sent their test kit INCLUSION CRITERIA: 1. Men and women aged 60‐74 years 2. Have not returned a bowel cancer screening kit within 13 weeks of delivery 3. Registered with a participating general practice located within the London Boroughs of Brent, Ealing, Lambeth, Lewisham, Redbridge and Barking and Dagenham