Paul and Heather McCartney have admitted they use good cop, bad cop tactics - with him as "the good detective" - in their fight against the global fur trade.
The couple were filmed abroad and at their farm in Sussex
The revelation comes in a BBC One documentary in which Lady Mills McCartney adds that Tony Blair always returns her husband's call within 10 minutes "if he's in the country - or within hours if he's not."
The McCartneys versus Fur had unprecedented access to the couple over a year which has seen them campaign for a European ban on dog and cat fur, an end to the Canadian seal hunt and a boycott of US clothing giant, J Crew.
Former model Heather takes her protest to the streets, vowing to be tough on those who ignore her message, while veteran pop star Paul chooses less confrontational methods in the belief that "no-one is Beatle proof".
He concedes, however, that in the Beatles' hey day he appreciated the qualities of fur.
"Like most people, we didn't realise when you wore a fur jacket as John did on the concert tour on the roof of Apple or as I did in the film 'Help'┐ you didn't realise what you were doing by wearing fur."
The couple reflect on fears that comparisons to Paul's first wife, Linda, could lead to media criticism of Heather's involvement in the animal rights cause.
Paul says: "Heather didn't want it to look like, you know 'She's jumping on the bandwagon', 'She's just trying to be Linda' - so she was very sensitive about that even though I knew how she felt about all of this."
Heather adds: "I'm kind of past worrying about what the press are going do and how they're going to pull me apart because I thought, you know what, they slate me all the time for my charity work, anyway."
The film follows the couple on both sides of the Atlantic, with Heather taking the anti-fur fight to the US, seeing her meet fellow celebrity campaigners such as Pamela Anderson, Alec Baldwin, Pink, Dennis Rodman and Jamie Lee Curtis.
Heather took on most of the campaigning while Paul was on tour
Heather targets fur- wearing 'A' list celebrities warning that "If I ever bumped into Cindy Crawford, Linda Evangelista or Jennifer Lopez, there is no way I would be gentle with them because they've been informed time and time again."
It is a threat she follows up on when she bursts into J Lo's Sweetface fashion range offices in New York.
Armed with an anti fur DVD and leaflets she causes havoc, telling the gathered media: "I try to do things gently, diplomatically, but then what do we do?... Because people like her and P Diddy, Puffy Daddy, P Didderly Widderly, whatever you call him, keep doing these fur lines."
The programme shows how the campaigning celebrity couple view their own differing styles, Heather saying that "I'll do the harassing - you can be the nice boy". Paul refers to himself as "the good detective."
Heather also reveals a hidden problem faced by shoppers in the UK.
She discovers fur scarves being sold as fake and sends them off to be tested to find that they were in fact made out of real rabbit fur. Campaigners fear the problem is widespread because there is no legal requirement to label fur garments in the UK.
The McCartneys' number one goal is the pursuit of a Europe wide ban in the trade of domestic dog and cat fur, which animal welfare groups believe is being produced mainly in China. They and other campaigners believe that cat and dog fur could be making its way on to our high streets, because the trade in the fur is completely legal in the UK.
Heather handles a cat fur coat from China made out of 20 tabbies and we hear Paul describe graphic undercover footage obtained in China: "You are seeing┐ a dog pulled out of a sack and it's shivering but trusting its master still. And then you actually are seeing it┐ skinned alive."
Armed with new evidence of the trade within the Czech Republic, Heather sets off to Brussels in search of an EU ban.
The programme provides a rare look into the world of the campaigning McCartneys, revealing how Paul uses his influence, even with the Prime Minister. Heather says: "Paul can ring up and get through and he will call back in 10 minutes if he's in the country or within hours if he's not.
"So as Paul says 'No one's Beatle proof.'"
In a bid to get the EU ban, Paul uses this lobbying power with EU trade Commissioner Peter Mandleson - because he is a dog lover.
The programme hears from Tom Steifel-Kristensen, Creative Director of Kopenhagen Fur who has been cited as one of the most influential people in fashion. He feels "as long as these ethical standards are in place I think that that any use of animals is legitimate."
June Ambrose is the American stylist to music stars such as Missy Elliot, Jay Z, Maria Carey and P Diddy. She feels she has every right to use fur, a view that has made her a target for protestors saying: "I had people come up to me and call me a killer and murderer┐but I look down and they're wearing leather sneakers."
The film also features the last surviving British mink farmer, Mike Cobbledick, who is now working in Denmark following the UK fur farming ban back in 2003. He is still angry at having to leave the country to continue his business saying "If it's acceptable to other countries then it should be acceptable in the UK."
Real Story: McCartneys Versus Fur - BBC ONE, Wednesday 19 April 2006, 2100 BST.