Yes, you are probably right. It did sound like that. I'll try to get a better photos at the weekend.
Found a video I recorded, it does a screech at around 4 seconds into the video, very windy so most of the noise is wind.
I went to my garage the other night and under the floodlight I saw something lizard like on the ground. When I bent down to look, it was a little newt. I took this picture of it. He's quite well camouflaged on the mossy concrete, but you can cleary see his eyes. He didn't move all the time I was looking so I thought he was dead. But he was gone next morning. I've had this happen before in our garden. He may have been eaten by something but apparently they often play dead if seen! lol
Just spotted this cheeky old fox sitting in the garden. Took the first shot just with my mobile phone, then grabbed my binoculars and held the phone up to them. It's a little blurry and vignetted but you can see his markings quite well. He then saw me and legged it! lol