I do not need XXX hours/ days notice for a landlord to come into the house or my room. (S)he can walk into the room when I am having sex for all I care. I do not need notice because I am growing drugs in my room. I need notice because I have dignity and would like a chance to clean up. For the same reason I do not want a lock on my door because I am growing drugs, I want a lock because I am fed up of things being stolen!

"Council tax, ummm... fire and safety, ummm..." I have heard every excuse under the sun! So few places in Sheffield have locks! What is the problem?

It all depends on the type of tenancy you have. If you have rented a house on a joint tenancy with others ie all of you signed the same tenancy agreement for the whole house then a lock on individual doors are not required. If however, you have signed a tenancy agreement for one specific room ie rm1 and pay rent for only that room then the landlord can come into the common parts of the property but not your room and you should be able to secure your room.
Talk to Housing Aid?

YOu also have to have a seperate TV licence if you have a lock on your door in a shared tenancy house....apparently....seems silly tho.

:D
soz was quite funny way u posted it, but i see yr point i dont see any harm in it, i was going to put 1 on my door as ive moved bck 2 my parents (dont ask :) ) but my mum has decided she wants to use some of the space in it for a wardrobe so not happening. no matter how much u get on with ur housemates u never know specially when some1 new moves in but thats the prob with tenancy and landlords like to set the rules and do what they want!!!

They do own the property after all.
It alters things though, like the tv license situation, legally it's no longer a single dwelling with several people living there, it becomes multiple dwellings with some common areas.

If a house is rented to a group on a single tenancy and there aren't already locks on the door a landlord is not required to fit one, you choose who you move in with after all.
It does change the property, and a landlord generally doesn't want this. If you mean the landlord is entering the property, then they do have do give you some notice. If however you mean your housemates or people they are inviting back to the house are stealing from your room then that's an issue you need to resolve with them, or find more respectful people to live with.