Scottish 'Fukushima radiation' tests show minute levels
The latest results on monitoring for pollution believed to be linked to Japan's damaged Fukushima nuclear plant show a fall in material being traced.
In Scotland, minute levels of iodine-131 have been recorded by equipment in Glasgow and Lerwick on Shetland.
The data is the first from testing sites across Scotland and the rest of the UK since updates changed from weekly to fortnightly reports.
Other test sites are in Caithness, Dumfries, Lothian and Renfrewshire.
Iodine-131 was not detectable at these stations.
The Scottish Environment Protection Agency (Sepa) and Health Protection Agency carry out the monitoring.
The HPA said that overall the levels detected were lower than those observed in the previous update published on 21 April.
The agency added: "The levels being detected mean there is no risk to public health in the UK from the environmental concentrations resulting from the release of radioactive material at the Fukushima nuclear power plant.
"The monitoring equipment is extremely sensitive and can pick up trace levels well below any potential risk to human health."