Thanks for the comments guys.
Today I replaced the rear spoiler bolts. Whoever installed it used hex head bolts which have torn the rear boot seal. So today I got some M6 25mm dome head allen bolts and replaced them. I'll have to get some black washers at some stage too. When replacing the bolts I lifted the spoiler off, it needs new double sided tape. The muppet that installed it didn't remove the backing on the boot side so it was still sitting on paper, which by now had shrunk and disintegrated.
