I rented my flat on a 12 month lease contract and asked that this contract be one with a 6 month break clause with the agent prior to receiving the contract. On the day of signing the contract i forgot to look out for this clause ans signed it, and having gone through it the other day cant find anything in the contract referring to this. I have the letter from the agent initially stating that this was going to be a 12 month contract with the option to break in 6 months. Will this letter suffice and allow me to break contract without paying for the remainder of the contract?