 Complete the following phrase:  The first bill was presented to Parliament in 1829 by Henry Warburton, author of the Select Committees report. Following a spirited defence of the poor by peers in the House of Lords, it was withdrawn, but almost two years later Warburton introduced a second bill, shortly after the execution of John Bishop and Thomas Williams. The London Burkers, as the two men were known, were inspired by a series of murders committed by 