Wheel trims from eBay cost £30
Removed factory radio
replaced with a double din eBay aftermarket radio that I picked up for £70ish
additionally had to purchase a Ariel connector and an autoleads adaptor pc275-4 From Halfords which for both was like £20
Had to cut one end of and wired all the cables together, Didn't go as straight forward as planned so my advice would be use some decent connectors so you only gotta do it once! The photo below shows the wacky wiring before we got the sound working
We had to buy new red connectors^ and replace them all to get any sound from it! Halfords were no help and tried to tell me it was a huffed radio!
My fox rear speakers don't and haven't worked since I got it but I'll look into this soon...
eBay radio works as should! Bluetooth etc all working, my only problem is you have to manually turn it on and off when getting into and leaving your car as it won't turn on/off with ignition key.