Issues:

• Issues:

• Usefulness of licensed SAR files is still limited when studying interaction as even with relatively detailed destination geographies, origins are still coded very coarsely

• No spatial coding of workplace location

• The 2001 Controlled Access Microdata Samples (CAMS) offer more opportunity to study interaction with both origin and destination coded at LAD level, however CAMs small sample size restricts analysis of migrants to only a few variables