Transparency of Lobbying, Non-Party Campaigning and Trade Union Administration Bill

I welcome the fact that the Government are in listening mode on these issues. Given that Government Members often accuse Labour Members of listening too much to trade unions, I was particularly interested to hear that the Deputy Leader of the House and the Department have been listening to the TUC with regard to the annual conference, so perhaps they are not exempt from lobbying by the unions. The issue of the annual conference is obviously one for the main political parties and some of the minor political parties plus the TUC. Is there a list of defined organisations for these annual conferences?