Travellers have set up camp on land a year after police and bailiffs were called to remove a group from the site. They were ordered to leave the land in Wolvey Road, Bulkington, Warks, last June after the High Court ruled they were illegally occupying the site.
On Wednesday, Nuneaton and Bedworth Council said a family had moved onto the site and were in breach of an existing injunction on the land.
Failure to leave could result in imprisonment, the council added.
Before moving onto the Wolvey Road site the family had been living in a nearby car park.
No electricity
The family's father, Patrick Ward, said they had nowhere else to go.
He added: "We have been living in the car park for 10 months with no electricity and no water.
"My children have been terrified living there.
"Why hasn't the council got anywhere else for us to go?"
Warwickshire County Council has an official travellers site at Griff Hollows near Nuneaton but the family do not feel it is suitable.
Nuneaton and Bedworth Council is trying to get planning permission to develop another site in Nuneaton.