local monopolies developed by the gas companies, calling for the distribution pipework to be owned collectively by the consumers. Pearson was a Liberal and was elected at the 1847 general election as a Member of Parliament for Lambeth. His campaign was prompted by a desire to promote his penal reform campaign in parliament. He resigned his seat in 1850 thorough the mechanism of accepting the Stewardship of the Chiltern Hundreds. Campaigning for an underground railway Recognising the increasing congestion in the City and its rapidly growing suburbs, Pearson published a pamphlet in 1845 calling for the construction of an underground railway through the Fleet valley to Farringdon. The proposed railway would have been an atmospheric railway with trains pushed through tunnels by compressed air. Although the proposal was ridiculed and came to nothing (and would almost certainly have failed if it had been built, due to the shortcomings of the technology proposed), Pearson continued to lobby for a variety of railway schemes throughout the 1840s and 1850s. In 1846, Pearson proposed with the support of the City Corporation a central railway station for London located in Farringdon that was estimated to cost £1 million (approximately £ today). The station, to be shared by multiple railway companies, was to be approached from the north in a covered cutting wide. Pearson's aim in promoting this plan was to facilitate the improvement of the social conditions of City workers by enabling them to commute into London on cheap trains from new residential developments of good quality, cheap homes built outside the capital. The 1846 Royal Commission on Metropolitan Railway Termini rejected the proposal, preferring to confirm a limit around the centre of the capital into which no new railway lines could be extended. In 1854, a Select committee was set up to examine a number of new proposals for railways in London. Pearson made a proposal for a railway connecting the London Termini and presented as evidence the first survey of traffic coming into London which demonstrated the high level of congestion caused by the huge number of carts, cabs and omnibuses filling the roads. Pearson's commentary on this was that: the overcrowding of the city is caused, first by the natural increase in the population and area of the surrounding district; secondly, by the influx of provincial passengers by the great railways North of London, and the obstruction experienced in the streets