CBD is completely legal for use in the UK, as unlike THC (one of the other compounds present in the plant) CBD is not psychoactive and so doesn't get you high.
KLORIS products are all tested to ensure THC levels are well below the legal threshold, while CBD levels are at those specified for each product. We publish the independent lab reports for every batch of our products.
For more information see https://www.bmmagazine.co.