Tempeh starter in the UK

Anyone in the UK got access to a reliable source of tempeh starter? I've done a bit of googling and failed so far.
Can't be arsed to make my own tofu, there doesn't seem to be a great cost-saving in it on a small scale, but I can't get tempeh locally so advantages of DIY are high...
Can't be arsed to make my own tofu, there doesn't seem to be a great cost-saving in it on a small scale, but I can't get tempeh locally so advantages of DIY are high...