3.2 What about statistical disclosure control?

• Small cell adjustment abandoned in favour of record swapping:

- Households swapped

- Targeted to ‘risky’ records

- Construct risk score for every individual; combine to household score

- Imputation considered as part protection

- Households swapped only as far as their risk is considered ‘high’

- Individuals swapped between communal establishments

• Work on SDC on Origin-Destination Tables still ongoing