You can search the GRO indexes on www.findmypast.com or on www.ancestry.co.uk - it means going through the years quarter by quarter up to 1983, a long process I'm afraid, if you don't know where or when the person died. Age at death is given, which should be useful. Perhaps you'd like to post the name, more details might help
Barbara
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Census and bmd information is Crown Copyright, from www.nationalarchives.gov.uk and www.scotlandspeople.gov.uk Norfolk - Ebbs Whiterod Zipfell Lincs & Yorks - Sivills Predgen Sweden - Jönsson Cronberg Andersson Yorks - Spence Hide Hird Durham - Dalkin Selby Renwick Somerset - Keen Hitchins