Farmers must not obstruct either a field-edge or a cross-field footpath or bridleway with growing crops. The line of the path must be clearly marked at all times. Crops over a height of 6 inches will normally be considered an obstruction.
The farmer is required to ensure that a minimum 1 metre wide strip is cleared on cross-field footpaths and 1.5 metres on field-edge footpaths; a minimum 2 metre wide strip is cleared on cross-field bridleways and 3 metres on field-edge bridleways.