During his life, Pratt played a leading role in opposing perpetual copyright, resolving the regency crisis of 1788 and in championing Fox's Libel Bill.

Lord Chancellor Thurlow hesitated over what action to take, thereby precipitating the regency crisis of 1788.

One of these caused a regency crisis in 1788 during which the kingdom of Ireland attempted unsuccessfully to nominate his son George IV as regent.

The mental illness exhibited by King George III evidenced in the regency crisis of 1788 has inspired several attempts at retrospective diagnosis.

He is known to have supported William Pitt the Younger during the regency crisis of 1788-9.

This regency crisis was averted by the George's sudden recovery.

November-February 1789 - A period of a mental instability for the King, George III, causes a regency crisis only averted by his sudden recovery the following year.

Rolle backed Pitt on the regency crisis in 1789, making a direct attack on the Prince of Wales' relations with Maria Fitzherbert which was thought inappropriate by the Whigs.

The regency crisis was defused by a complicated and tense power-sharing arrangement between Eleanor and Peter.

During the regency crisis of 1788-9 he gave his support to the Prince of Wales in opposition to William Pitt the Younger.