It probably depends on engineering works when they are out at the weekend. This is from the EMR website regarding which services are being removed from the base timetable from the 18th:
Staying safe while travelling The safety or our customers and colleagues is our biggest priority. Rest assured we’re continuing to do everything we can to make your journey as safe as possible and help you to travel with confidence. You can play your part by following these simple rules and...
www.eastmidlandsrailway.co.uk
Saturdays
0633 London St Pancras to York will not run
0835 London St Pancras to Nottingham will not run
1034 London St Pancras to Nottingham will not run
1334 London St Pancras to Nottingham will not run
1534 London St Pancras to Nottingham will not run
1834 London St Pancras to Leeds will not run
2002 London St Pancras to Leeds will not run
1705 London St Pancras to Lincoln will not run between Nottingham and Lincoln
0612 Nottingham to London St Pancras will not run
0745 Nottingham to London St Pancras will not run
1045 Nottingham to London St Pancras will not run
1245 Nottingham to London St Pancras will not run
1545 Nottingham to London St Pancras will not run
1745 Nottingham to London St Pancras will not run
1750 York to London St Pancras will not run
2045 Lincoln to Nottingham will not run
0645 Leeds to London St Pancras will not run between Leeds and Nottingham
0740 Leeds to London St Pancras will not run between Leeds and Nottingham