As highlighted in the ‘abandoned council offices’ post in September 2016 the Park North and North Point offices were somewhat overgrown. In December the council took action and served a ‘Section 215 Enforcement Notice’ requiring them to tidy up the sites “due to the negative impact it was having on the environment in such a prominent location. There were also safety concerns due to the overgrowth beginning to spill onto the pavement.”
The West Sussex County Times have run an article on this too but have used a photo that would appear to be from May 2014 so does not show the extent of the problem. See the photo below for how it was in September 2016.