In fact, when looking at the UK's skin cancer incidence rate, his single seems to have had a negative effect!
Obviously I appreciate it's not that simple. But it does help highlight a common issue with health related data, especially when looking at trends. Some of the increase in recent years may be due to greater awareness and earlier detection. However in this case, Cancer Research suggest that actually most of the increase is likely to be genuine and predominantly as a result of changing sun-related behaviour e.g. the increase in holidaying abroad. Data Source: Cancer Research UK