Sorry - missed out from previous review the following:

Rating: 9/10 (22 April 2000)

My apologies - in my enthusiasm to post a review for this remarkable film, I submitted it before filling in a couple of essential details that I'd planned to check on this site.
The "X" who plays Hogarth Hughes is a very talented youngster called Eli Marienthal (now you know why that name didn't trip off my tongue!). The Government Official was Kent Mansley, played wonderfully by Christopher McDonald.
Hopefully now I've covered the omissions. Thanks for reading and giving me the chance to put right these errors - not mentioning these two actors would be doing them a big injustice as they both contributed so much to the film.