Usual address one year ago
This variable records the person's usual address one year before Census Day. People are asked to tick 'no usual address one year ago' for a child aged under one. In the Migrant Indicator variable (MIGPUK), the migrant status for children aged under one is determine by the migrant status of their 'next of kin' (defined as in order of preference, mother, father, sibling (with nearest age), other related person, Household Reference Person).
The Migration postcode variable (MIGPCPUK) contains where appropriate, a postcode or a country code. Otherwise it is set to 'not applicable'.