Speaking to The Mirror, Nelson said "this is not the first time that Hollywood has been insensitive. If the story is about terrorism then this is extremely insensitive.
"[Our trust] has had lots of help from America so I just think that these are the wrong images to portray." He also pointed out that the recent slaying of over 30 Britons in Tunisia adds to the poor timing.
People lashed out on Twitter as well, with many panning the trailer's release and timing.
Lionsgate, the studio releasing the movie, has not yet commented on the backlash.
The 7/7 attacks saw three bombs detonated in the London Underground and one on a London red bus, resulting in 52 people dying and over 700 getting injured.
The sequel, due for release next year, sees the action move to London as world leaders gather for the Prime Minister's funeral, only to be targeted by assassins.
Posters released earlier this year show Big Ben and the London Eye on fire.
by Ethan Sills
