Victorian tiles underneath a carpet have absorbed pattern from rubber underlay. How can I remove, any ideas?

[Lou]

Don't mind me while I bump up some older but good threads. If you can contribute to the thread, go ahead. But if it's nothing for you then don't reply and it'll soon drop off the What's New page etc.
Worth linking to our new forum structure while I'm doing stuff:-

• USA Tile Forum for DIY and Professional Tile Fixers
• UK Tiling Forum for UK tiling advice
• Canada Tile Forum
• Tiling Advice Australia
• Ireland Tiling Forum
• Tiling Tools
• DIY Tiling
• Tiling Courses
• Tile Import / Export