| bhid | Household identification number |
| bpno | Person number |
| pid | Cross-wave person identifier |
| pidp | Cross-wave person identifier (UKHLS) |
| biviow1 | Interview outcome Wave 1 |
| bhhmem | Household membership |
| bnelyr | New entrants – in HH last year? |
| bnewhy | New entrants – why living in HH |
| bnemnjn | New entrants – month joined HH |
| bneyrjn | New entrants – year joined HH |
| bivfio | Individual interview outcome |
| bivrref | Reason for interview refusal |
| bivcoop | Extent of cooperation |
| biodc | Document check |
| bhgr2r | Relationship to reference person |
| bhgsex | Sex – HH grid |
| bhgbm | Month of birth – HH grid |
| bhgby | Year of birth – HH grid |
| bmastat | Marital status |
| bhgspn | PNO of spouse/partner |
| bhgemp | Employment status – HH Grid |
| bhgfno | PNO of father |
| bhgmno | PNO of mother |
| bhgra | Responsible adult |
| bage | Age at Date of Interview |
| bage12 | Age at 1.12.1992 |
| bbutype | Benefit Unit Type |
| bbuno | Benefit Unit Number |
| bnchild | Number of own children in household |
| bdepchl | Whether dependent child: DSS definition |
| bhoh | Conventional Head of Household Indicator |
| brach16 | Whether responsible adult for child |
| bagei | Imputation flag – BAGE and BAGE12 |
| blrwght | Longitudinal respondent weight |
| blewght | Longitudinal enumerated individual weight |
| bxrwght | X-sectional respondent weight |
| bxewght | X-sectional enumerated individual weight |
| bmovest | Individual mover status |
| bsampst | Sample membership status |
| bneyrjn4 | New entrants – year joined HH: 4 digit |
| bsppid | Cross-wave person identifier of spouse |
| bfpid | Cross-wave person identifier of father |
| bmpid | Cross-wave person identifier of mother |
| brapid | X-wave person identifier of resp. adult |
| bdistmov | Distance of residential move |
| bbuid | BU identifier |
| becstat1 | Econ.Status BU (HBAI defn), i |
| becstat2 | Econ.Status BU (HBAI defn), ii |
| bfamtype1 | BU type (HBAI defn) |
| bfamtype2 | Family type – new HBAI definition |
| bbutype_mod | benefit unit type |