Hello, I hope the following assists you.
From the description you've given this will be due to a dual mass flywheel failure. Usually if the flywheel fails you find either the noise changes as you press the clutch or there is a vibration through the clutch pedal.
Unfortunately if the flywheel has failed then the transmission needs removing to access the clutch and flywheel. By far the cheapest option and to prevent repeat failures is to replace the dual mass flywheel with a solid flywheel conversion such as http://www.ebay.co.uk/itm/AC-DELCO-SOLID-FLYWHEEL-CONVERSION-KIT-AC925K-/301156457607?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Model%3AMondeo&hash=item461e52dc87 a new dual mass flywheel is around £300 from Ford without the clutch so you can see the difference when compared to the solid flywheel conversion.
I hope this helps but if I can assist further let me know and I'll reply as soon as I'm able to.
I asked one question, paid £14. Understand from your original introduction I could ask further question if required at no expense . Am I correct ?
you can ask further questions relating to this until you are satified.
I look forward to your reply.