It is rude behavior, no doubt. But resources should be allocated to impactful crime, IMO, because there is plenty of that.
One of the most gorgeous girls in Birmingham, Alabama once thanked me for oogling her out by the pool, because of all the funny boys in the neighborhood not paying attention to her. Greatest legs in the history of mankind.
Since this is in the UK, I am thinking the catcalling might be from the invading jihadis, who can escalate to sexual violence quite quickly.