When is a 25m pool not a 25m pool? When it has a wall which rises from the floor and reduce the pool to 15m.

While many swimming pools will have group classes throughout the day, the Lewis Sports Centre in Stornoway is the only one I know that has a wall rise from the floor to split the pool into two while the class take place. You can be swimming only for an attendant to warn you that the a class is about to start and the pool will be reduced.

You can check the class timetables in advance but I’ve never quite worked out which classes trigger the wall and which don’t. Perhaps, the Isle of Lewis’s most famous descendent can answer: Donald J Trump, whose mother was born just outside Stornoway.

Cost: £4.80 as a non-member.

Facilities: Decent size cubicles and nice and clean changing area. However the showers are right beside the pool and open to everyone so not suitable for a proper wash, only a rinse.

Swimming pool: The lap lane is wider to allow more swimmers but it operates an anti-clockwise swimming lap where you don’t swim back and forth but more in a circle as you swim a few metres to the left or right at the end of each lap.

Other facilities? You can pay extra for the sauna, steam room and jacuzzi.

Busy? At the times you would expect and quiet when not.

Recommended? Yes.