http://news.bbc.co.uk/1/hi/england/norfolk/7095214.stm

Nav has been found, unfortunately dead.

Don't know why the chute didn't open...
Can't have been a 'proper' civilian or trainee as they ejected and Command Eject seems to be set to 'rear only' otherwise the the pilot would have gone as well. That lever is always in 'Both' set-up if a non-qualified Nav is in the back

RIP.