Penny Lancaster participated in a passing out parade with the City of London Police yesterday, which marked the official completion of her special constabulary training.
The former model, 51 - who joined the force last year - received a certificate at the ceremony and marched in a procession alongside some of her colleagues in the capital.
Her husband Sir Rod Stewart, 77, is understood to have supported Penny at the event, alongside family and friends of the other recruits who were in attendance too.
Photos from the special occasion have been shared on social media, showing the mother-of-two wearing a black suit for the ceremony, as well as a police hat and tie.
The charity Care Of Police Survivors (COPS) - of which Penny is a patron - shared photos from the event, congratulating her in posts on Twitter yesterday afternoon.
"Congratulations to COPS Patron Penny Lancaster with her passing out certificate," the charity wrote alongside a photo of the special constable proudly holding her certificate.
Another photo showed Penny alongside the charity's trustee, Chief Superintendent Rob Atkin. They also shared footage of her marching in the passing out parade as well.
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A video shared by Police Care UK on social media showed the families of recruits greeting them following the parade, which is understood to have been at the Guildhall.
The footage appeared to show singer-songwriter Sir Rod greeting his wife Penny - whom he has been married to since 2007. It looks as though the couple embrace in a hug.
Penny has been patrolling the streets as part of the police force since last year, with the ambition having arose from her involvement in a Channel 4 show in 2019.
Famous and Fighting Crime saw celebrities join volunteer police officers at Cambridge Constabulary, giving them first-hand experience of life as a special constable.
The experience prompted Penny to volunteer as an officer for City of London Police, with her telling ITV's Lorraine last year that she felt it's a job that she is meant to do.
The role has seen her cover events following the death of Queen Elizabeth II, including her funeral. Penny said it was the "biggest honour of all" to be able to work on the occasion.
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