I have been issued a section 13 to increase my rent. I am happy with this as I have been paying the same amount for 2 and a half years. However what I would like to know is if the letting agent can charge me for this. They have sent me an invoice for £50 +vat for the privilege of increasing my rent. I find the agent generally poor so I’m not convinced that they are doing the right thing by trying to charge me. Any advice greatly received.