The warning comes as families prepare for the school break, and after huge sections of cliff along the coast collapsed last month.

In February, a large section of cliff fell away at Seaford Head which was then followed by a large section of cliff falling away in Peacehaven.

With visitor numbers set to increase as the weather improves, local councils have teamed up with HM Coastguard and landowners to launch a campaign reminding people of the risk posed by the unstable chalk cliffs.