A lookup file of the lower tier local authorities (local authority districts, unitary authorities, metropolitan districts, London boroughs) to the upper tier local authorities (counties, metropolitan counties, inner and outer London, unitary authorities) in England and Wales as at 31 December 2018. (File Size = 72KB)Field Names - LTLA18CD, LTLA18NM, UTLA18CD, UTLA18NMField Types - Text, Text, Text, TextField Lengths - 9, 28, 9, 28NB: File amended to include correct UTLA for London Boroughs and Metropolitan districts