Fulwood House, a derelict 1960s NHS tower block in Sheffield that has been empty since 2018, has become the focus of safety concerns after young people were filmed trespassing on the building, including climbing to the seventh floor and standing dangerously on window ledges. Sheffield Council has now formally registered the building as a dangerous structure and identified several weaknesses in its perimeter security, prompting the NHS and council to commit to strengthening security measures. The issue carries particular weight given a 2017 death in the area when a 19-year-old university student fell from a derelict hotel whilst urban exploring.

The building, which previously housed NHS administration staff, is currently protected by 24/7 security, warning signs and security fencing, yet these measures have proven insufficient to prevent unauthorised access. Residents, including a 35-year-old long-time local, have described the security as "flimsy" and expressed concerns about structural deterioration. Sheffield Council has said it will issue a formal notice requiring improvements, including strengthening weak points in the perimeter and boarding up ground floor openings. Police patrols in the area are being increased in response to anti-social behaviour reports. The NHS has confirmed it will take "further action" following a thorough investigation.