Under the rules, swimmers – including non-Muslims – are barred from entering the pool in normal swimming attire. Instead they are told that they must comply with the “modest” code of dress required by Islamic custom, with women covered from the neck to the ankles and men, who swim separately, covered from the navel to the knees.

At Loxford School in Ilford, east London, a local Muslim group organises weekly sessions for Muslim men, with the warning that “it is compulsory for the body to be covered between the navel and the knees. “Anyone not adhering to the dress code or rules within the pool will not be allowed to swim”.

Discrimination against Muslims or Catholics or Jews isn’t OK, but against non-Muslims, go for it.