Perth and Kinross placed joint fourth in the list of areas with the cleanest air in the entire UK, according to newly-published research findings.

Reading at the same air pollution rate as Gwynedd in Wales means the region is meeting standards set by the World Health Organization (WHO).

The only regions with better results in the UK are Midlothian, Wiltshire and Berkshire, with readings of 5.1, 5.4 and 5.8 respectively.

The data from IQ Air was provided per town, city and village in Scotland as well as England and Wales. The report focused on the areas that were ranked as meeting the ‘WHO target’, or as ‘good’ by WHO.

The air pollution level is ranked by PM2.5 (fine particulate matter) data as acquired from ground-based air quality monitoring stations.

Commenting on the findings, Shannon Keary of said: “Air pollution and a greener environment continues to be a huge talking point for many people in the UK, and, in this campaign, we wanted to reveal where in the UK has the lowest air pollution.

“It’s really promising to see that so many of our towns, cities and villages have such clean air, and it’s especially great to see that a huge 88 per cent of the UK has low air pollution rankings that are either within the WHO target or are rated ‘good’.”