In the
1780 general election, Lawley was returned as
Member of Parliament (MP) for
Warwickshire, being the choice of the
Whig manufacturing interests of
Birmingham, which by this period could name one of two Warwickshire's two MPs without opposition. Despite this, he was not himself a Whig partisan but:
had given the most incontrovertible indications of a sincere zeal in their cause, was unanimously selected as the voluntary object of their unbiassed preference...and at the county meeting, held a short time afterwards, he was named and accepted without any opposition. He is not likely to prove a speaker in the House, but ... it is supposed that he has no superiors in integrity. Lawley did not vote consistently with either party. In 1784 he was a member of the
St. Alban's Tavern group which tried to bring Fox and Pitt together. His only two recorded speeches were on matters of constituency interest (on a bill to allow
brass to be exported and supporting a petition of some
iron manufacturers). He retained his seat until his death. ==Later years and legacy==