Just Stop Oil (JSO) has denied claims its members threw orange confetti over Tory former chancellor George Osborne at his wedding yesterday.
The environmental activist group does, though, "applaud" the actions, particularly if it is part of a protest. Photographs taken at the wedding in Bruton, Somerset, show a woman approaching Mr Osborne and his former Treasury adviser Thea Rogers from behind and chucking the confetti.
But JSO spokesperson James Skeet confirmed the woman who threw the confetti was not a member of the group.
He said: "Unfortunately, we can't claim credit for the orange confetti on this one, but we wish the happy couple well. I neither condemn nor praise it. I don't know who that lady is."
The 52-year-old ex-Chancellor of the Exchequer married his former Treasury adviser Thea Rogers in a ceremony in Bruton, Somerset, in front of friends including David Cameron and his wife Samantha.
JSO had earlier this week sprinkled similar confetti over Court 18 at Wimbledon, interrupting the match involving British number one Katie Boulter.
Priti Patel slammed the group on social media, angrily tweeting: "JSO are shameful, attention seeking, disrespectful low life (sic)." The campaigner group have since quashed reports it was responsible though.
Mr Skeet added: "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.
"However, as much as we applaud the use of orange confetti at this wedding, we were not responsible."
In a tweet on Sunday, the group, referring to "confettigate", said: "The lady who threw confetti in Bruton yesterday was upholding a tradition that is common across many cultures.
"We absolutely defend the right for people to throw confetti (of whatever colour) at weddings and other celebrations.
"If it was a form of protest - which is yet to be established - we applaud it and thank the person concerned. It was peaceful and not especially disruptive, but got massive media attention for Just Stop Oil's demand."
JSO's official Twitter account wrote on Saturday, alongside a video of the incident: "You look good in orange George Osborne.
"Congratulations to the newlyweds."
The grey-haired woman, in a floral dress and pale-coloured jacket, emptied the bag of confetti near the couple before she left after being spoken to by two men.
The happy couple looked puzzled but did not appear to speak to the woman, who fled quickly when approached by journalists attending the event.
Speaking today in reaction to the stunt, Shadow Chancellor Rachel Reeves said she had "no time" for JSO. When asked about the group's tactics which have most recently included disruptions at Wimbledon and the second Ashes Test at Lord's, 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 counterproductive 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 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."
Several people on social media did not agree with the prank, claiming they had gone "too far" by trying to ruin their big day.
One said: "I generally support your actions, and I am no fan of George Osborne, but this is not on. You have overstepped mark.
"Your actions today will have done your cause no good whatsoever."
Another added: "Really shameful of you.
"If you think doing this will put the public on your side, then you couldn't be more wrong."
Some people supported the action, with one saying: "Bravo that lady."
The incident is the latest to hit the couple around their wedding day as one the eve of their big day, every guest is said to have been sent a mysterious email.
Mr Osborne has called in police to investigate a “distressing campaign of harassment”. He is said to know the identity of the author of the email circulated to guests, friends, and family as well as to prominent journalists.
He has begun civil proceedings against the person and has now asked the police to investigate.