One of the symptoms of dementia which can cause high levels of strain is agitation. This is most apparent in the evening as the sun sets; a phenomenon termed ‘sundowning’. One possible way to alleviate sundowning is to ensure that an individual’s body clock is closely aligned with the 24 h dark/light cycle. In the absence of daylight, this research has shifted towards the use of daylight-simulating, dynamic lighting. This paper summarises the 16-week trial of a dynamic lighting and sensing technology with 11 residents living with dementia in a care home. Under exposure to 4 weeks of baseline lighting vs. 12 weeks of dynamic lighting, care staff were asked to complete a wellbeing questionnaire which was inclusive of agitation measurements. Radar sensors were used to monitor rest-activity, and data analyses completed during sundowning hours to make a comparison of proxy-reported and sensor-based metrics. The authors found that there does not seem to be any statistically significant impact to agitation for this cohort after dynamic lighting exposure. Although a small scale pilot, the authors found initial evidence to suggest that the radar sensors can depict the proxy-rated agitation on a group level but need more refinement to represent individual variations.