sentences:  The new company was independent for less than a year, as the London and North Western Railway (LNWR) offered them a perpetual lease in 1846, which was formalised by Act of Parliament in June 1847, although it was not fully implemented until March 1857.The Shropshire Union attempted to deal with the problem of high tolls on the Wardle Canal by proposing a bypass in 1852, arguing that the Middlewich Branch was "almost useless" without it.However, the LNWR requested that they withdraw the bill from Parliament and they did so.