Fan convention organizers FCD Events have confirmed that the U.K. event has been delayed, with a new date still to be confirmed.
The actor and director was due to be joined by former Stargate SG-1 co-star Teryl Rothery at the event in London next month.
David Hewlett, David Nykl, and Alexis Cruz will appear at Creation's Stargate convention this June.
SGU's David Blue headlines the first round of guest announcements for the Vancouver event.
The actors behind Baal, Apophis, Nirrti, and Hathor will all appear together this September at the fan convention in England.
The Stargate Atlantis duo will appear alongside Amanda Tapping, Michael Shanks, and others at Creation Entertainment's Stargate convention next summer.
Atlantis's writers had designs on bringing back Elizabeth Weir, and the full story may be explained at this week's events in San Diego.
EXCLUSIVE: Fans at next week's Stargate events in San Diego are in for a unique treat, including a live reading of scenes from the unfilmed Atlantis movie script.
Atlantis's cast and crew take center stage at the official Stargate panel and after-party, July 18 in San Diego.
The Stargate Atlantis actor will appear at Creation Entertainment's fan convention in Chicago. (UPDATED)
The U.K. fan event is bringing a powerhouse of Stargate women to Telford this September.
Long-time Stargate fangirl Jacqueline Purse debriefs us on her weekend with Amanda Tapping and Richard Dean Anderson!
Two of Stargate's finest appeared on stage together at Wales Comic Con — and talked about getting the band back together.
GateWorld and Creation Entertainment are giving Stargate fans a chance to win two tickets to the big fan event in Chicago this June.
Teryl Rothery will join Amanda and her fans for a weekend in London next spring.