Five caravans moved in to the car park at Mill Hill today, after arriving at the Ropetackle North development site on Wednesday.
Welfare assessments will be undertaken and the travellers will be offered spaces on the Westhampnett transit site under special powers available to Sussex Police.
If they refuse, police can order them to leave the county for three months.
A welfare officer from West Sussex County Council is on site.
Don’t miss out on all the latest breaking news where you live.
Here are four ways you can be sure you’ll be amongst the first to know what’s going on.
1) Make our website your homepage
2) Like our Facebook page
3) Follow us on Twitter
4) Register with us by clicking on ‘sign in’ (top right corner). You can then receive our daily newsletter AND add your point of view to stories that you read here.
And do share with your family and friends - so they don’t miss out!
Always the first with your local news.
Be part of it.