Re: Will register include 'charities' as well as businesses?
Actually I looked and it can and does. Of those lobbying in the article Friends of the Earth are on the registry in various guises as is the Corporate European Observatory - well done to FoE and CEO. Ironically I cannot find ALTER-EU though a European Alternatives is there but that seems to be a very different organisation with a different website and focus.
Defining what is lobbying is non trivial and identifying the true source and objective can be highly obfuscated. I am more keen on transparency measures focusing on officials and elected members as is done in the UK. Who met whom, declaration of members interests and so on as that cannot be a barrier to access to your elected representatives and officials whereas lobbying regulations can. It also allows the electorate to make up its own mind.
Otherwise officials can hide behind such regulation to avoid the very scrutiny and anti-corruption measures that might otherwise be suggested.
Bias can occur in many ways - it is not unknown for Commission officials to actively support access for some NGOs and charities whilst presenting a barrier to industry stakeholders.