Britain's Whig Party recovers its strength and unity by supporting moral reforms, especially the reform of the electoral system, the abolition of slavery and emancipation of the Catholics.

Catholic emancipation is secured in the Roman Catholic Relief Act 1829, which removes the most substantial restrictions on Roman Catholics in Britain.

The Whigs become champions of Parliamentary reform.

They make Lord Grey prime minister 1830–1834, and the Reform Act 1832 becomes their signature measure.

It broadens the franchise slightly and ends the system of rotten and pocket boroughs (where elections are controlled by powerful families), and gives seats to new industrial centers.

The aristocracy continues to dominate the government, the Army and Royal Navy, and high society.

After parliamentary investigations demonstrate the horrors of child labor, limited reforms are passed in 1833.