Analysis of information sources in references of the Wikipedia article "1983 United Kingdom general election in Scotland" in English language version.
In 1983, Margaret Thatcher won 387 seats out of 650, a majority of 144. Labour secured 41 of the 72 seats in Scotland, the Tories 21, the SDP-Liberal Alliance 8 and the SNP 2. Obviously Scotland's 72 seats would not have influenced the outcome either way.