I've not used the Nottingham shuttle for a while, but it
was quite ok back then, timetabled journey time 45min
but probably a bit shorter outside of rush-hour, runs
every 30min:
Nottingham Timetable
Don't really see the point to change to the St. Pancras train
for 'East Midlands Parkway' station, which is interestingly ignored
on EMA's 'how-to-get-there' site. Infrequent shuttles were
the problem ? Total travel time anyway is not faster than
the Nottingham shuttle, just more hassle. Check here:
east midlands - Trip Request - English
For your return: EMA shuttles have this nice colour-coding:
Yellow: Derby and Loughburough, Green: Leicester, Blue:
Nottingham, all departing outside Departures these days.