LONDON—More than 250 survivors of the bombing that killed 22 people at a 2017 Ariana Grande concert in Manchester, England, are taking legal action against Britain’s domestic intelligence agency, lawyers said.
Lawyers from three law firms said Sunday they have submitted a group claim on behalf of more than 250 clients to the U.K.’s investigatory powers tribunal. They said they could not provide further details because it was an ongoing legal matter.
