Succeeded by Cotswold, Gloucestershire, England — map location from the modern place
North Cotswold Rural District (row carries the GEDCOM import typo 'Gloustershire, Engalnd', left as recorded) was abolished 1974 and merged into the non-metropolitan district of Cotswold, Gloucestershire (Wikidata Q581022).
North Cotswold Rural District · Wikipedia (en)
North Cotswold RD was merged with four neighbouring districts to form the non-metropolitan district of Cotswold, one of six districts in Gloucestershire.
Fetched this session; confirms Cotswold as this district's genuine 1974 successor, not a namesake.