Southeastern and Northern have RPI plus 3 per cent. regimes. Southeastern is for the entire franchise area until the end of 2011; fares regulation will revert to RPI plus 1 per cent. from January 2012. Northern has an RPI plus 3 per cent. regime for the Leeds and West Yorkshire area only—this applies for the length of the present franchise. Both regimes were approved on the basis of supporting rolling stock investment in those franchises.