Recently we saw the demise of Midland Mainline Train Services to/from London to be replaced by Stagecoach as the operator
But it does seem there is an upside as Stagecoach are now selling tickets on the old Midland Mainline services thru the Megabus / Megatrain site starting at £1
The way it seems to work is is there are the cheapest £7 Singles available on the rail operators site EG Derby/London £7 then Megatrain will have the same ticker for £1, If the rail operator site has tickets for £9 or £11 the same seem to be £5 on the Megatrain site.
Routes Covered at the old MM services from Sheffield, Chesterfield, Derby, Nottingham, Loughborough, Leicester to London and back
Cheap travel without the BUS side of the deal,