Let lots of agents know what you are looking for so you get a really good selection to choose from.
Inform the agent of your criteria (location, budget, furnished/unfurnished, occupation date requirement, tenancy period and any other aspects that are important to you).
Expect to pay a deposit of at least one months rent, possibly more. Possibly some administration charges.
You may be required to provide references.
Ensure you read and understand the tenancy agreement. The Citizens Advice Bureau may check this for you. Clarify what is NOT included in the rental fee, such as council tax, utility bills, ground maintenance etc.
Examine the inventory prepared by the agent and keep a copy.
Check restrictions: sub-letting, pets etc. Can you redecorate?
Notify defects in writing as soon as they become apparent (even if you do not want them remedied).
Establish what is covered under maintenance (boilers, refrigerators, radiators etc.).
Usually, you will not have to deal with the landlord directly. Should you have any problems or queries, direct them to your agent first.
Other issues to consider are, parking, neighbours, noise levels, public transport availability etc.
