Hi,  I have just been to a friend's house . She just started renting it and has removed all the internal doors. The house is about 12 years old. I said that it must be a fire risk but she said her landlord said it was fine.  Also,  she has no co detector anywhere but does have 2 smoke alarms.  Am I wrong? Shouldn't there be a co detector and can't doors help prevent the spread of fire?

Thanks

Without knowing a lot more about the situation it is impossible to give definitive answer, I would think the means of escape from fire (MoE) was designed, taking into account the doors in place, by removing them, it is going to worsen the MoE, even too a dangerous condition.

As it is a rented premises then it is subject to The Smoke and Carbon Monoxide Alarm (England) Regulations 2015 which require the landlord to provide smoke and CO detectors.

Thanks. There  are smoke alarms,  I just thought that a closed door at least provides protection from smoke, no door = no protection

You are quite correct read my first paragraph and ideally it should be fire doors but any door will be better than none.