Re: Fork it!
Nominet is a registry not a registrar.
A ccTLD domain registry is a natural monopoly.
As an end user you register domains through a registrar (think GoDaddy or Fasthosts) which acts as a reseller of sorts. You can pick your registrar (and there are plenty of them to choose from, which means the registrars are in a healthy free market competition), but you can't pick your registry.