A Conservative, described by Disraeli in 1846 as ‘a very great squire and a very agreeable man’, Hartopp had an undistinguished parliamentary career, but paid diligent attention to local agriculture.
On the retirement of a long-serving incumbent at the 1859 general election, Hartopp was elected in second place for North Leicestershire, behind another Conservative, but ahead of an independent Conservative. Although he is not known to have spoken in debate, Hartopp honoured his promise to defend ‘Protestant institutions’ by opposing the abolition of church rates and of Oxford University tests.
Hartopp was again elected in second place at the 1865 general election, but complained bitterly that he had been ‘represented as a Papist’ by the losing candidate and ultra-Protestant Charles Hay Frewen, a former Conservative MP for East Sussex.
Hartopp retired at the 1868 general election, when his former colleague Lord John Manners told electors that they could not have had ‘a more painstaking, reliable, trustworthy, and able representative’ than the outgoing member.
