| mhid | Household identification number |
| mpno | Person number |
| pid | Cross-wave person identifier |
| pidp | Cross-wave person identifier (UKHLS) |
| miviolw | Interview outcome prev wave |
| mivstat1 | Interview status: previous waves |
| mhhmem | Household membership |
| mnewhy | New entrants – why living in HH |
| mnemnjn | New entrants – month joined HH |
| mneyrjn4 | New entrants – year joined HH |
| mivfio | Individual interview outcome |
| mivfho | Final household interview outcome |
| miodc | Individual document check |
| mmemorig | Sample Origin |
| mhgr2r | Relationship to reference person |
| mhgsex | Sex – HH grid |
| mhgbm | Month of birth – HH grid |
| mhgby | Year of birth – HH grid |
| mmastat | Marital status |
| mhgspn | PNO of spouse/partner |
| mhgemp | Employment status – HH Grid |
| mhgfno | PNO of father |
| mhgmno | PNO of mother |
| mhgra | Responsible adult |
| mage | Age at Date of Interview |
| mage12 | Age at 1.12.2003 |
| mbutype | Benefit Unit Type |
| mbuno | Benefit Unit Number |
| mnchild | Number of own children in household |
| mdepchl | Whether dependent child: DSS definition |
| mhoh | Conventional Head of Household Indicator |
| mrach16 | Whether responsible adult for child |
| magei | Imputation flag – LAGE and LAGE12 |
| mlrwght | Longitudinal respondent weight |
| mlewght | Longitudinal enumerated individual weight |
| mxrwght | X-sectional respondent weight |
| mxewght | X-sectional enumerated individual weight |
| mmovest | Individual mover status |
| msampst | Sample membership status |
| mxrwtuk1 | X-sect’l resp. weight inc all samples |
| mxewtuk1 | X-sect’l enum. weight inc all samples |
| mxrwtuk2 | X-sect’l resp. weight within UK estimates |
| mxewtuk2 | X-sect’l enum. weight within UK estimates |
| mlrwtsw1 | Longit’l resp. weight inc Scot-Welsh |
| mlewtsw1 | Longit’l enum. weight inc. Scot-Welsh |
| mlrwtsw2 | Longit’l resp. weight only Scot-Welsh |
| mlewtsw2 | Longit’l enum. weight only Scot-Welsh |
| mlrwtuk1 | Longit’l resp. weight inc all samples |
| mlewtuk1 | Longit’l enum. weight inc all samples |
| mlrwtuk2 | Longit’l resp. weight within UK estimates |
| mlewtuk2 | Longit’l enum. weight within UK estimates |
| msppid | Cross-wave person identifier of spouse |
| mfpid | Cross-wave person identifier of father |
| mmpid | Cross-wave person identifier of mother |
| mrapid | X-wave person identifier of resp. adult |
| mdistmov | Distance of residential move |
| mbuid | BU identifier |
| mecstat1 | Econ.Status BU (HBAI defn), i |
| mecstat2 | Econ.Status BU (HBAI defn), ii |
| mfamtype1 | BU type (HBAI defn) |
| mfamtype2 | Family type – new HBAI definition |
| mbutype_mod | benefit unit type |