They were working overtime doing promotion for the new “X Files: I Want to Believe” here in the States last week. And now, David Duchovny and Gillian Anderson have moved on to the UK.

The Sci-Fi icons were spotted arriving at the London, England premiere event last night at the Empire Cinema looking a bit jet-lagged, but nonetheless excited to be unleashing their film on the British audience.

For all of you Sci-Fi fans out there, last night was a big night at Grauman’s Chinese Theatre as “The X Files: I Want to Believe” held its big Hollywood Premiere.

And X Files mainstays David Duchovny and a very pregnant Gillian Anderson as well as Amanda Peet were all in the house to promote the new flick.

There's been a baby boom in Hollywood as of late - and you can add X-Files star Gillian Anderson to the list of expecting actresses.

The 39-year-old Emmy-winner is happily awaiting the arrival of her second child with boyfriend Mark Griffiths, according to People magazine reports.