Little question for all you Working Tax Credit experts: If I started a chain of, say, four online shops and wanted to become self-employed, how would I register as the sole trader of the four businesses? I mean, when the WTC form asks you the name of your business and how many hours of work you devote to it, would I just list the four businesses under one umbrella name, or would I have to list them as separate entities? And what proof would they need of the actual hours I spend working on my online shops each day?