Hi MOC,
I bought mine from Morrisons, but any hardware retailer should have solid beeswax.
Basically what I did:
1. Use a soft stockingette cloth and apply the beeswax to the damaged surface in a circular motion.
2. Leave for a few mins and and buff up.
3. Repeat this method until the surface appears shiny again.
It took me a good 30/45 mins to get the finish right, but make sure you are feeding polished marble.
A specailist told me that Marble is a living rock, which needs to be fed once a year at least!!!!!
Hope this helps, worked wonders for me, infact the client we did it or asks us to feed he marble every thre month now, costs her a packet becasue she has it everywhere, and to be hinest if she wants to cough up the dosh then we do it.
It's quite theraputic really.- Taht's my opinion anyway.
Let me know what happens
Den