[mothered]

I can’t quite tell , it says I confirm that good received by ( company name) have not been delivered . I declare I will comply with Yodel security and the police .
I do think it’s a company generated one as it came in an email and they told me to fill it out in blue pen and send a picture. The parcel delivery was by Yodel .

Judging by their following statement, It seems as though they've generated It, namely specifying their carrier.

I declare I will comply with Yodel security

It's simply stating that an Investigation may be opened, and full compliance Is required with the carrier and the police- meaning a police report. As long as It's not an affidavit, then It's fine to go ahead and sign It.