Luttrell was never asked to answer for raping Mary Neal. He re-entered the Westminster Parliament as Member for Plympton Erle in 1790. Then in 1796 he was made Commander-in-Chief, Ireland, and in 1798 he led the British suppression of the United Irishmen Rebellion. His command had the unusual distinction of being upbraided by his successor as Commander in Chief, Sir Ralph Abercromby for an army "in a state of licentiousness, which must render it formidable to every one but the enemy".