You may have seen one of these cards on your doormat and wondered what this was all about? Lambeth’s Electoral Registration Officer must undertake a canvass of all households in the borough each year to check voter details are correct. 'Canvassers' are out and about knocking on the doors of residents who have not already confirmed their details have changed - and more importantly - confirmed their details remain unchanged. You have to do this every year.
Or simply open the door to the canvasser when they next coming knocking. It literally takes a minute.