Sorry to disturb everyone by reviving a dormant thread; but I just thought you'd like to know that this whole thing is still ongoing and is probably a bit bigger than first thought...
A nice lassie from Ofcom phoned me yesterday about the MMSI number on Bennan. She seemed quite pleased when I told her that the vessel doesn't currently have a DSC VHF, so she could re-allocate the number to the other boat with the same number. She phoned back a little while later to find out when our boat was first issued with an MMSI "as the first one was in 1999".So that's OK, ours was 2001. Which still leaves another boat to be aged - apparently "our" number had been issued three times
The lassie from Ofcom said she was only there on contract for "database cleansing". Oh well, at least someone is doing something constructive about all this