Specialist police negotiators remain deployed in Leeds city centre as a rooftop standoff continues, forcing road closures and a security cordon around one of the city's busiest commercial districts. While the immediate story is one of public safety, the incident carries a secondary implication that will be of direct interest to commercial property investors and asset managers operating in one of England's fastest-growing regional office and retail markets: the tangible cost of unplanned operational disruption to city centre assets.