Red route PCN received in person

On Monday the 22nd Dec 8:30, I received a penalty charge for stopping in a marked parking bay on a red route, handed to me by a police officer. I did not notice that the sign said no stopping except 10-4pm for loading.
I was in the van at the time of them taking the pictures as evidence, and the engine was on (lights are on in pictures). I would've been stopped there for no longer than 2 minutes had I not asked them why they were taking a picture of my van (whilst I was in it). They have uploaded 3 photos as evidence with the time stamps: 8:29:49, 8:30:58, and 8:31:11.

Is there any way I can contest this?

On Monday the 22nd Dec 8:30, I received a penalty charge for stopping in a marked parking bay on a red route, handed to me by a police officer. I did not notice that the sign said no stopping except 10-4pm for loading.
I was in the van at the time of them taking the pictures as evidence, and the engine was on (lights are on in pictures). I would've been stopped there for no longer than 2 minutes had I not asked them why they were taking a picture of my van (whilst I was in it). They have uploaded 3 photos as evidence with the time stamps: 8:29:49, 8:30:58, and 8:31:11.

Is there any way I can contest this?

Have a read of this post first and then upload your PCN and other information so they can be reviewed.

https://www.ftla.uk/civil-penalty-charge-notices-(councils-tfl-and-so-on)/read-this-first-before-posting-your-case!-this-section-is-for-council-tfl-dartme/