In the long context of British history, this is just the latest version of a perennial problem of too many young people drinking too much.

BBC: A POINT OF VIEW

It's a perennial problem for Earth observation missions - getting a timely sign-off from the politicians so that an enduring presence in orbit can be maintained.

BBC: Landsat aims to maintain gold standard

Finding parking remains a perennial problem.

BBC: Seville goes green

The problem of building things without an afterlife, and thus wasting resources and effort, is a perennial one for the Olympics.

ECONOMIST: The 2010 Winter Olympics