Ok Ash, I have been able to talk to the current owner of the house we bought.
Upon asking her if the tiles were polished porcelain, and if they were sealed, the answer was "yes they are polished porcelain, but no they are not sealed. The man told me only to seal them if I found them slippery"
Firslty Im not sure if she is correct as another conversation regarding paint colours left me wondering if she was colourblind!!.
I assumed that if the porcelain was laid they would automaticlly be sealed?
Is there a was to find out?
If they are not sealed, who should I get to do it and will the sealer also be the right stuff for sealing the grout, or is that another job??
Sorry for all the questions, I guess this is what you are faced with if you dont install it yourself.