I recently did a new school. Fitted a couple wash hand sinks in the classrooms. The supplied taps came with flexi’s so the lads just used them to connect up. Had a snagging list now saying to remove the flexi’s. So i will go back and fit m10 copper tails instead of the flexi. But my question is, they say wras approved on the flexi’s so are they allowed? Or no flexi and all, or only certain ones? Thanks.