The Just Stop Oil protest group was not responsible for throwing orange confetti over former British chancellor George Osborne at his wedding, a spokesperson has said.
Mr Osborne and his wife Thea Rogers were strewn with the confetti by a woman following their marriage ceremony in Somerset, England yesterday.
JSO spokesperson James Skeet confirmed the woman who threw the confetti was not a member of the group.
He told the PA news agency: "Unfortunately, we can't claim credit for the orange confetti on this one, but we wish the happy couple well."
Mr Skeet added: "I neither condemn nor praise it. I don't know who that lady is."
Asked whether the group welcomed outside protesters taking similar action to JSO, the spokesman said: "As a policy, Just Stop Oil is always accountable for our actions. You will know it is us because we will admit to it.
"The fact that we were vague last night implies that it wasn't really us.
"If orange confetti is the symbol of the revolution then so be it, but obviously you can always guarantee that we will be accountable for any actions that we undertake."
It comes after a prominent British Labour Party MP said attempts by the Just Stop Oil protest group to disrupt major sporting events are "a bit pathetic".
Shadow chancellor Rachel Reeves claimed she has "got no time" for the protest group's tactics, following demonstrations at Wimbledon and the Ashes in recent weeks.
Asked about the incident, Ms Reeves told the Sophy Ridge On Sunday programme on Sky News: "I have got no time for Just Stop Oil. To be honest, I think it is a bit pathetic and quite tedious disrupting tennis, snooker, other people's weddings.
"If they want to tackle climate change, engage in the policy answers, but they are not building support for their cause, they are doing the exact opposite.
"So it is counter-productive and it is rude frankly.
"People paid to go to Wimbledon, it may be the one time in their life that they get to Wimbledon, they don't want to be disrupted by a load of protesters."
Treasury minister Victoria Atkins also condemned the interruption to Mr Osborne's wedding.
The minister told Sky News: "This is a couple, clearly in love, on their wedding day and somebody has apparently taken the opportunity to throw some orange dust around."
She added: "I don't understand why an organisation would want to stop other people from having fun and enjoyment.
"They achieve nothing other than making people feel upset when they are missing out on the sporting event that they have been looking forward to for a very long time, or indeed their own wedding."
The SNP's Westminster leader Stephen Flynn, meanwhile, said he was "a little bit troubled by some of their practices", adding: "I don't see how it carries public support."
However, he said some of the outrage about Just Stop Oil was "a little bit far-fetched".
The Aberdeen South MP said: "I mean, the confetti yesterday - was anyone hurt in that regard? And when you juxtapose that with the storms in Zaragoza in Spain, I think we can see which one has caused the most damage here."
He added: "It is very unfortunate and I would probably be a little bit upset about it as well, but I would probably take four steps and take the confetti off me."
