Patients who are being sent an appointment for urodynamics (standard or video) will be also sent a recruitment letter and participant information sheet (PIS), to inform them of the study. One week later a member of the study team will phone the patient, to see if they are interested in participating in the study and assess the eligibility criteria. If that patient is interested and they fulfil the inclusion/exclusion criteria they will be invited to attend an introduction appointment. This will be conducted 1-2 weeks prior to the urodynamic test, at which point study details will be discussed and written informed consent will be taken. The participant will be taught how to use the digital and paper versions of the bladder diaries