Households across the country will soon be asked to take part in Census 2021. The census is a once-in-a-decade survey which provides the most accurate estimate of all the people and households in England and Wales. This year, it will be the first run predominantly online with households receiving a letter with a unique access code, allowing them to complete the questionnaire on their computers, phones or tablets. Census day is March 21, but households across the country will receive letters with online codes allowing them to take part from early March. For more information, visit www.census.gov.uk