Government plans to prevent terrorist organisations using charities as a cover for their financial activities are impractical and may not be needed, according to sector commentators.
The Home Office is inviting key figures from the sector to take part in a review of ways to protect charities from terrorist abuse.
Peter Cardy, chief executive of Macmillan Cancer Support, said: "I think these new proposals are silly, impractical and very likely to have disastrous, unintended consequences.
"It could result in the restriction of perfectly proper charity activity that looks like it doesn't support the Government."
Nolan Quigley, European and international officer at NCVO, added: "There's a risk that this could exaggerate the level of the problem. I don't see the point of the review - the Charity Commission's existing rules should be adequate."