Can anyone offer me any advice as to my legal rights please? I rented a flat through a lettings agency and paid 6 months upfront; a total of 13,000 pounds. A week after moving in I was informed that no gas safety certificate was in place. The previous one expired 4 days after I moved in. British Gas attended and deemed the boiler at risk (because the engineer could not get proper access to the flue); he put a warning label on the boiler and told us not to use it. It took 2 more weeks to get the necessary work done so that the flue could be accessed, however British Gas have still not been back to assess it. We have been without heat or hot water for 23 days. The lettings agency are ignorning me. What are my rights? Can I legally end the tenancy? Can I stay in a hotel until a gas safety certificate is in place? The flat is freezing. Thank you in advance for your help.