It'd be good if you had specific stopping patterns which were generally the same all day:
London, Luton Airport, Luton, Bedford, Wellingbrough, Kettering, Corby
London, Luton or Luton Airport, Bedford, Wellingbrough, Kettering, Market Haghbrough, Leicester, Loughbrough, Long Eaton, Derby
London, Leicester, Nottingham
London, Leicester, Derby, Chesterfield, (Limited stop Dronfield), Sheffield, (Doncaster, Wakefield Westgate, Leeds, York, Scarbrough)
London, Luton, Bedford, Leicester, Loughbrough, Nottingham, Carlton, Lowdham, Newark Castle, Lincoln