Unexplained paint scratches

Hi all, this is the first post I've made so bear with me. About 6 months ago I noticed very strange scratches on the bonnet of my beloved R50 and I can't seem to figure out what's caused them. The scratches first appeared very suddenly and very evenly but only on the bonnet. As soon as it reaches the scuttle panel below the windscreen it's perfect, as well as the wing panels. Cat claws and bird feet are the only things I can think of but I've parked it in the same place the whole time they started occurring. I've also tried using some Meguiars ultimate compound to see what difference that'd make but it only made the parts between the scratches shinier... Admittedly I polished it by hand so I expected nothing amazing but it made no difference. I'll put the photos below (I've included a couple of photos of the rest of the car for reference).. any help at all as to what it could be or a fix would be appreciated as I reckon it needs a respray in the long run.

Cheers