How often do individuals make a difference?

Most MPs will be unable to point to any one thing they did that wouldn’t have happened without them. Occasionally, individuals make a difference, though. Polly Toynbee lists a few that have, as follows; Barbara Castle’s lifesaving 70mph speed limit Patricia Hewitt’s smoking ban Harriet Harman’s childcare and nurseries Roy Jenkins’s great 1960s “permissive society is a civilised society” reforms David Steel’s Abortion Act. Source: Politics is a rough trade, but Jamie Reed should be hanging in there | Polly Toynbee | Opinion | The Guardian