BARTER does for companies what LETS does for communities: create 'accountancy units' as a medium of exchange.
'Barter' means cash-free exchange. But 'Barter Money' is an interest-free currency.
I have compiled the different 'Information Platforms' used to carry interest-free currencies.
Professional barter companies charge a percentage fee for administering 'trade pounds'. But their currency is free from debt and from interest. That's why these companies are models for governments. But as they make 'ordinary' money, too, some people and companies are more effective, ethical and successful than others...
CurrencyWales.com should do for the Principality of Wales what LETS and Barter do.
Similarly, Stable Sterling c/should do for the Commonwealth of Nations what LETS and Barter do...