I am sure it is available as a plant somewhere in the UK. As to the seed, try Google again, but use Salvia uliginosa as the search term.

Thanks Rich. Yes it is available as a plant in the UK on Google, but plants are not very easy things to send by post. I really wanted seeds, so I could plant a drift of several plants interspersed with something like Verbena Bonariensis. I had originally Googled using only one l in the name. I saw someone in a previous post had used two ls and I used that as I was too lazy to check the spelling. But thanks for your comment.

A very nice gentleman from the UK - Robin Middleton has just e-mailed me to says that he thinks he will be able to send me some seed. I would like to publically thank him and also to say how much I appreciate this and the other forums. I have only recently taken up gardening but the knowledge and help that I have found in three years on the internet is greater than what would have been available in a lifetime for most people BG (Before Google).

The correct spelling is uliginosa.

Robin.