Real Car paintwork problem

[super__dan]

The pics below are of the paintwork on my year 2000 MX5, about 6 months ago these marks started appearing in it and are very noticeable after it's been cleaned. It's affecting the bonnet and boot, not so much the sides. It doesn't look like its really surface finish and a bit of polish didn't touch it.

Any ideas what I can do, might be my wedding car in 5 weeks.