To what extent do our walking and cycling behaviours relate to each other, and do we cycle as well as we think we do? Piloting the walking and cycling behaviour questionnaires in the UK

•Piloting the Walking and Cycling Behaviour Questionnaires in the UK.•Factor structures were found to be different to those reported previously.•Self-reported unintentional walking and cycling behaviours correlate significantly.•Self-rated cycling proficiency correlates with the performance of unintentional errors.•Cycling Behaviour Questionnaire scores add little to the explanation of past collisions.