Just to say that despite the european ban there is some( presumably old stock) bottles of "travel essentials" branded tincture of iodine for water purification being sold off for £1.99 in "mountain warehouse" prev. £4.99 I cant find it on the website but the store in bowness on windemere had plenty on show. I remember seeing a previous thread where people were lamenting its withdrawl and mooting alternative sources such as aquatic suppliers. so i was suprised to come across it.