Hello my name is ***** ***** I will help you with this.
Just to be clear, they have been doing works on the land you own?
Ok - well they can't do this - you own the land. Any damage to your land could be criminal damage and an offence.
You could also seek a Court injunction to stop them doing anything in relation to your land or trespassing upon it. You can complain to the Police who could investigate and prosecute.
But you can get a local Solicitor to write and ask them to stop, or say you will go to Court.Can I clarify anything for you about this today please?