Long-running

The long-running game show has a unique format, in which three contestants vie to be the first to supply the question to an answer they are given.

The war between Western Sahara and Morocco is a long-running conflict.

The long-running play finally closed on Broadway, just short of setting a record for longest playing.

Services on SWR's neighbour Southern were badly disrupted for nearly 40 days in 2016-17 following a long-running dispute involving drivers union ASLEF and the RMT. And it's passengers - the very people the railway is there for - who are caught in the middle.

It’s one of the world’s longest-running experiments, having already gone on for 142 years. And the botanists in East Lansing hope that it will last for at least another 80.