Hi just got my new to me 2019 delivered ,I want to fit a rear cycle rack any advice if it’s possible ,Halfords are saying there are a couple that will fit ,but I’m unsure I’m worried about the spoiler .
You're right to be worried about the spoiler. You have to avoid any rack that uses straps that pass over the spoiler as it's plastic and not strong enough to take the load.. there aren't even any "aero" gaps through which straps can be threaded.
You may be able to find something that fits sufficiently high up that straps will extend upwards from the top tailgate edge so that they do not press against the spoiler, or something that fits only to the bottom and side edges. Otherwise you may have to look for roof carriers or get a towbar and use a towbar-mounted rack.