Initally, I thought so but there was more to it than just a whistle.

http://www.bbc.co.uk/news/uk-england-hereford-worcester-32519331

http://www.mirror.co.uk/news/uk-news/wolf-whistling-builders-quizzed-cops-over-5590787  (That's a different Mirror link)

http://www.mirror.co.uk/news/uk-news/wolf-whistle-builder-ian-merrett-attacked-5603110

http://www.dailymail.co.uk/news/article-3059864/Flattery-threat-woman-complained-police-wolf-whistle...

A quote from that last link:-

"Extreme? You could baulk at her calling the police — far more effective to grass them up to their bosses, since building firms are always putting up placards assuring us of their courtesy — but it’s clear that this was nasty.

It went beyond mere high-spirited whistling from scaffolding above, and Poppy made it clear she was upset, especially when one accosted her on the pavement one day, barring her way."