The county borders onto Lincolnshire , Rutland , Northamptonshire , Warwickshire , Staffordshire , Derbyshire , and Nottinghamshire . The county borders onto Derbyshire to the north-west , Nottinghamshire to the north , Rutland to the east , Warwickshire to the south-west , Staffordshire to the west , Lincolnshire to the north-east , and Northamptonshire to the south-east .