Hi simon..
I would recommend these products..
LTP Stone Oil Antique
Description: An oil based pre-polish sealer formulated to give an aged appearance to natural stone, terracotta and quarry tiles. Surfaces sealed with LTP Stone Oil Antique are normally finished with LTP Antique Beeswax. Maintain surfaces with LTP Waxwash on floors and LTP Stonewash on walls.
Tips:
Technical Data Sheet (PDF)
Followed by..
LTP Antique Beeswax
Description: The traditional way of finishing natural stone, terracotta and quarry tiles pre-sealed with LTP Stone Oil Antique, LTP Stone Oil or LTP Boiled Linseed Oil. This brown beeswax polish protects, enhances and provides a hard protective layer, which helps resist staining. LTP Antique Beeswax is very durable and can be buffed to a shine immediately after application. Maintain with LTP Waxwash on floors and LTP Stonewash on walls.
Tips:
Technical Data Sheet (PDF)