Unless you've been meticulous with your planning, it’s not often a marriage proposal gets caught on camera.

But that’s exactly what happened on Saturday as Christian Moore from Swindon took a photo of his son Rowan at the Lydiard Park firework display, only to later realise he caught a couple's big moment in the background.

In one of the photos, a man can see smiling whilst getting down on one knee, whilst in the second taken moments later, the couple can be seen hugging.

Swindon Advertiser: Christian Moore took this photo of his son when he accidentally caught a marriage proposal in the background.Christian Moore took this photo of his son when he accidentally caught a marriage proposal in the background. (Image: Facebook)

The Adver has tracked down the happy couple.

24-year-old Kaija Louise Mitchell-Bawden was given the shock of her life when now-fiance Robert McMahon, 34, got down on one knee.

She said: “It was just a bit of a shock really waking up this morning and seeing it all over Facebook, I just didn’t expect it.

“It’s lovely seeing so many people congratulating us, it is one of the happiest moments of my life and I didn’t think there were any photos of it. So, it’s just really lovely.”

Swindon Advertiser:

Asked what went through her mind when Robert proposed to her, the 24-year-old added: “I was shocked, I just couldn’t believe it. I was laughing because I was nervous but I really couldn’t be happier.”

Kaija and her partner partied well into the night, spending the night at the Power Lounge bar in the town centre.

Swindon Advertiser: Kaija and her fiance RobertKaija and her fiance Robert (Image: Newsquest)

On Sunday, Christian took to the Swindon Community Noticeboard page on Facebook to try and track down the couple.

He revealed in a comment that he "was looking through the pics and wondered what was going on as [I] thought [he] had fallen over at first".

The post has generated a lot of positivity and happiness for the couple - racking up almost 900 likes and more than 50 comments.

Among those passing on their congratulations was Toni Brack, who said: “Aww that’s lovely hope they see this x”

While Sally Cutler added: “Awww how lovely congratulations.”

Kelly-Marie Stubbs said: “That’s lovely hope the couple are found memories like this are cherished so much.”

Laura Harrison quipped: "Let's hope they didn't want to tell everyone themselves."

Mikala Dodkins added: "That’s so lovely! Made me chuckle a bit too because if she had said no, it would’ve been too noisy for anyone else to hear it! Well played sir!"