I have recently visited a building where pretty much every door has a fire door sticker on it, I have check around the edges of the doors and there is no seal. I am under the impression every fire door should have a seal as smoke is arguable more dangerous to human health. In addition they did not have any ratings on them that I could see i.e. FD30. Should I ask for the signs to be removed ?

I am surprised you are concerned about whether a door should have a sign on it or not. Surely the question here is should some of these doors be fire doors (with suitable strips and seals) to protect the MOE. There is simply insufficient info on your post for anyone to help you with that question In some cases, it is acceptable to accept an existing well fitting solid door as a fire door (for example, a cross corridor door in a low risk premises). On the other hand, for protected routes, staircases and high risk premises, it maybe necessary for a BS 476 fire door to be fitted. I think everyone who uses this site will agree that the provision of suitable fire doors is a vital part of a premise's fire safety strategy, so its important to get any advice 101% correct, and that advice is bespoke and risk assessed for that particular premises and it's use. Please do not take offence 9Yally, but are you carrying out a FRA or just asking out of interest? If the former, do you feel competent to do so? If not, you may want to think again, as if you provide incorrect advice, you may well be contravening fire safety legislation and putting yourself at risk of prosecution

9yally, sometimes if the door is fitted into a rebated frame the intumescent strips may be fitted on the back of the rebate for the door to close into- much like you would fit a rubber draught seal. Cold smoke seals (bristles) are not required on all fire doors. Sometimes the easiest way of determining if a door is being presented as a fire door is to check the upper and lower hinge. These should be certifire 30.