Thanks for answering, Yes i gave him notice in writing 28 days before hand. Rooms were rented out on a room to room basis. Two other people moved out at the same time as me, both giving written notice aswell. He claims that if I had made an immediate replacement of my room my deposit would have been returned in full, given the onus is on the outgoing tenant to find replacements. however this was not stated on the lease. I did however send a txt message when organising to move in stating that i would be there for the full year but it did not work out and i had no choice but to move out.