Tiles on solarium

I have a lovely front line apartment in La Azohia, but the tiling on the solarium is not a good job, however the tiles inside the Apartment are a fabulous job with a 10mm space all round and not a crack to be seen.

I can only think it was two different tile companies that was employed, I am a tradesman myself and thinking of retiling the solarium myself, does anyone know where I can buy new 200mm x 200mm x 10mm outside tiles locally.