VCU Bearings

I have a 2002 TD4 Freelander with 140k on the clock, it went into James French recently (£400 fuel pump job ..ouch) and they reckon that the VCU bearings need doing, it does drone a bit but I was ignoring it. Question is, how long can this job be left for before it gets terminal and how much should it cost to get it fixed, is it a DIY job or one to avoid... any help much appreciated !!

You can buy them from Ebay very cheap
Its a very easy job you can do your self.
If they get really bad the noise will get very loud and they can seize and spin in the rubber mount making more noise

You may be able to do it yourself.

VCU Bearings - Hippo's Freelander = draft at the moment. Most don't bother with markers.