In this episode of CSS Breakdown: Book by Book, we delve into Chapter 13 of Norman Lowe's 'Mastering Modern British History', our Season 6, Episode 13 deep dive into Gladstone's first ministry (1868–74). We explore how, following the Second Reform Act, William Ewart Gladstone took the helm as Prime Minister, ushering in a period of intense political struggle against his great Conservative rival, Benjamin Disraeli. This episode highlights Gladstone's deeply held principles, from his committed Christian faith and belief in equality of opportunity to his dedication to free trade, economic retrenchment, and his complex, often unsuccessful, attempts to pacify Ireland. Listeners will discover the sweeping, though often unpopular, domestic reforms introduced during his ministry, including significant changes to education, universities, the Civil Service, trade unions, public health, electoral processes, the legal system, and the army. We also examine Gladstone's foreign policy approach, which, despite aiming for peace and respect for other nations, often led to perceptions of weakness and unpopularity among the British public. Finally, we dissect the various reasons behind the Liberal defeat in the 1874 general election, revealing how a combination of disgruntled elite, alienated working classes, and a newly invigorated Conservative party under Disraeli led to the end of an era of radical change.