Mike the unimaginative wrote:

Absolutely! Why, oh, why terminate at Corby, why not run most / some /
all services on to Melton Mowbray? What have the people of Melton done
to deserve being ignored in this way?
Surely it can't be to do with paths - or is it more to do with
platform length at Melton (can't say I've ever been on the station
there)?

Assuming that they are using four- or five-car Meridians it shouldn't be a
problem, AFAIK.