Hi you can find out about the care of Victorian tiles on our website:
http://www.victoriansociety.org.uk/advi ... ive-tiles/
This is pertinent to your question:
How should I clean ceramic floor tiles?
Ordinary household surface cleaners, used according to the instructions on the label, will take care of day-to-day cleaning. To remove stubborn dirt, use a specially formulated product such as BAL Ceramic floor cleaner or HG Extra Cleaner. Scouring powder, metal scourers or wire brushes should never be used on tiles. Although cleaning products will help to shift a great deal of built-up dirt and old wax, be prepared to contribute a lot of elbow grease.