Absolutely true Mikki, totally agree as far as brain/common sense goes.

Mind you, in a lot of cases going in the field isn't "right to roam", it's a public footpath/bridleway that was on the map prior to the legalisation of the right to roam.

Farmers do have a legal obligation not to keep dangerous livestock (specifically bulls) in fields crossed by public footpaths.

However, this only applies to bulls over 10 months old, so we're stuck with bullocks!