On 24 June 1824, Lewis was appointed to the
Royal Commission for inquiring into the nature and extent of the Instruction afforded by the several Institutions in Ireland established for the purpose of Education where he served with the other Commissioners:
John Leslie Foster,
William Grant,
James Glassford and
Anthony Richard Blake. As chairman (1834–1839) of the
Poor Law Commission, he immediately clashed with
Edwin Chadwick, who had been the driving force for Poor Law reform. Chadwick was Secretary, not (as he had hoped) on the Board itself; and Lewis with
George Nicholls and
John Shaw-Lefevre proceeded to overrule his views. Lewis chaired the commission on the
Rebecca Riots, and the subsequent commission that abolished the
turnpike trusts. He was created a baronet in 1846. ==Family==