If you meant applying for HSMP: You will find enough information on this board to enable you to apply without the help of an agent. If you still have queries, you may post them on the forum and get an assured reply, normally within 24 hours. Agents are costly and they don't provide a great deal of info. Most of them don't even know the complete process themselves. So I'd suggest you to avoid them, if possible. The final decision is all yours.
If you meant looking for a home in the UK: You don't have to pay the agent if you are a tenant. They get paid by the landlord. You could also try the numerous property sites on the net. Give it a try - you'll get amazing results.