how often does the landlord visit? If teh answer is Never then id get a cat.
My tenancy agreement states no pets, but then after 4 years living here ive never seen my letting agent or landlord once.
So the 4 years ive had with my pet here have been bliss, also depends if your place is furnished by the landlord or not.
All depends if its worth the risk for you, you can be happy and have a pet or find somewhere else that will be pet friendly.
I'm the same I have a no pets but I've got a cat and when they call to do a house inspection I just put the cat outside for the day and put the cat littertray/bed etc in the toilet cupboard and they never find it.
Couldn't be without my cat
