Patients will be asked to record the time and volume of voids, any incontinence or urgency episodes and sleep-wake times. Patients return one week later with their electronic and paper diaries. Patients will be asked to complete a short questionnaire regarding their opinions. Clinicians should analyse the data as usual. Introduction and follow-up appointments will try to be arranged around patients' hospital appointments to avoid additional visits. Patients will be provided with an ELAROS electronic bladder diary as the electronic diary.