Advice on self closing doors for kitchen

I need to put a self closing fire door for my kitchen as the kitchen entance opens into the fire escape route of the flat. Flat is on the 3rd floor of a conversion building. A hinged fire rated door would be too large for the limited dining area. I am thinking of a surface mount sliding door, but cannot find one that is self closing. Pocket door are not ideal in this case. I am also thinkign for two double action fire rated doors (sallon style), which are self closing. Any ideas or feedback?