Morelands strain is available from bottles of Hens Tooth. Worthington From White Shield. Harvey's of Sussex from Sussex Best (Polypin or keg only) or Xmas Ale.
There are a few locals that make a bottle conditioned strain (Old Dairy come to mind) - but I have a feeling they use Notty in their brews.
Beer is like porn - you can buy it easily enough, but its so much more fun to make it