Scale: District level data used initially due to increased attribute availability, but only for Britain. Scope for trialling a ward level classification (including NI) at a later stage.

• Scale: District level data used initially due to increased attribute availability, but only for Britain. Scope for trialling a ward level classification (including NI) at a later stage.

• Data: Internal and international migration data used initially.

• Classification type: This classification will concentrate on classifying individuals rather than flows. Contiguity constraints not useful at this stage.