Got a tricky issue. I rent out a flat which is managed by an agent. Last night people in the flat above mine emailed me to say that the smoke alarm is beeping constantly, battery needs to be changed, v disturbing for them obviously. Tenant presumably not there at the moment. Agent is closed due to Corona virus, but I have emailed their emergency email (which seems to be the only way I can contact them) asking for urgent help / someone to access the flat. I’ve also emailed the tenant. Contract states tenant is responsible for upkeep of the smoke alarm, and I don’t think I can legally authorise emergency locksmith (if indeed they are working during this period) to enter without tenants permission. Is this correct? Is there anything else I can do? I feel awful for the people disturbed by this. Thank you!