Gold Coin Grass is known in Chinese as "Jin Qian Cao". About a month or so ago I also looked for an alternative due to the alcohol. I'm also from the UK, and after finding out that Jin Qian Cao IS Gold Coin Grass, I ordered some from one of many UK sites that sell it.
I got mine as a dried herb form. In this form the only real option is to make a tea out of it. I bought it from here:
Interstingly enough though, I have just found a site that sell it in capsules about halfway down the page (note it says "Gold Money Grass" as common name, along with the suspected benefits):
I may give the capsules a go in the future, as it would be a lot more easier then making the tea every day.
Hope that helps!