I wonder if any of these post 1984 deaths are his.  If so, the full record would provide also his birth date:

SURNAME FIRSTNAME(S) MTH REGISTERED YR REGISTERED  DISTRICT  View
   BEST MARTIN May 01 BATH/NESOMER
   BEST MARTIN ALMAN June 2003 MONMOUTH
   BEST MARTIN ALMAN June 2003 MONMOUTH
   BEST MARTIN ANDREW October 01 MID DEVON
   BEST MARTIN CECIL May 85 NEWCASTLE/T
   BEST MARTIN JOHN February 95 LEEDS
   BEST MARTIN PETER April 86 TOWER HAMLET
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