Forces charity Help For Heroes will not accept donations raised by Tommy Robinson, leader of the far-right group the English Defence League (EDL), Channel 4 News presenter Krishnan Guru-Murthy said.
It is thought that Drummer Lee Rigby was wearing a Help For Heroes t-shirt or sweatshirt when he was murdered in Woolwich last Wednesday.
More top news
A rollercoaster has reportedly come off the rails at a theme park in Scotland.
"I saw a lot of smoke come out from the tail-end of the aircraft. I wondered if it was normal, whether it was just exhaust fumes."
The House of Commons Petitions Committee has said they will keep an eye on the petition and are concerned about fraudulent signatures.