As a somewhat interesting aside, I've just had a look at the EI fleet listing on Jethros, it would appear that there will soon be a Concord flying the G- register.
EI-LRG is to be transferred to be G-EILG and, as with all the EI Fleet carries the name of a Christian saint associated with Ireland, in RG's case that's St Concord, or Conchobhar in Irish.
The now G-EILA is St.Patrick/Pádraig, the frame carrying that name is usually considered the fleet flagship (although it's been know to switch aircraft)