I was in the same confusion like you are facing currently and so after lots of head scratching. I got the best agent for the visas and this person helped me to get this tier 1 visa.

I think that this is more confusing and so you will have to think that there are many things related to the Visas which are out of our reach and this is the reason we should contact the experts who can be aware of this things .

I think that you need a expert agent who will deal all this matters and so that you can do your work, there are lots of agents who will help you with this, they are professionals and so you can rely on them.