Connecting a Brittania range to an LPG bottle?

I want to take my Brittania gas range to my new house that does not have gas. I can purchase some new LPG burners for the range. I would like to put in a new kitchen and not sure at present it's new layout and where the range will go. Are there rules how far a metal pipe can go from the cooker to the LPG bottle outside? Can this pipe be under floors or behind walls. I understand there has to be a flexi hose at either ends for connection to oven and bottle.