Simplify the following text for a Grade 8 native English-speaking person.
Original: East Midlands Trains provide a single direct Summer service every Saturday to and from London St Pancras along the Midland Main Line via Sheffield and Leicester , as well as a connecting service to Sheffield .
Simplified: East Midlands Trains provide a limited direct summertime service to St Pancras International along the Midland Main Line . It goes via Sheffield and Leicester .