Ann: Suspension from Official Quotation - Annual Listing Fees, page-10

Yes usually get a formal notice saying shares have no value. The company Cordis doing the administration is very poor with communications. No info on their website either.
Other adminstrators keep shareholders up to date even though they are not the priority.
My other failed company WMC the administrators are way better on communications and have been running the mine and will recapitalise it but have probably more to work with than RVR.