Hi,
The exact same thing happened to me in feb. I laso found it very strange as a police check cannot be carried out without the appropriate form being signed by yourself. I was told for 3 months that they were awaiting police checks and would be intouch shortly.
I am not sure what they are playing at but I find it a bit dodgey, and you dont even need a photo for a police check, which is what they told me the photo was for.