I'm not 100% certain I've got the right place, and I didn't think it was in a residential area. I also thought the car was on mudflats, I was expecting the fencing to be metal, possibly next to an industrial area. I was originally searching for slipways, or just somewhere a car could access the mudflats.
I don't think he parked there either. The other CCTV pic seems to show pretty much the same place (I couldn't see it before) but a slightly different angle, and no car:
Police hunt mysterious hooded figure in search for missing mum Sarah Wellgreen
It's the post coming up from the right hand side of the street sign and the shape of the sign (just above his head) which is swaying me towards it being the right place. And the proximity to where police were searching near the playground.
Google Maps
Another problem is the pic has been photoshopped. They've definitely obscured the sign on the car, and I think they've done the street sign too.
But I do see double yellow lines now, which I totally missed before (bottom right and maybe behind the car):
(Same link as above.)
I think it's difficult with a low quality picture, I start imagining I'm seeing things. (10 points for anyone who can find the giant knitted hyena.)
And I don't understand why the police would release CCTV to jog memories, but not give the location.