I just got them both on Ebay:
Cool White Festoon 31 - 39 mm C5W LED CAN Bus Error Free C10W Licence/Interior | eBay
C5W LED Bulb
PVC Rezaw-Plast Boot Liner for MG ZS EV since 2019 PVC rubber trunk protection m | Vehicle Parts & Accessories, Car Parts & Accessories, Interior Parts & Accessories | eBay!
www.ebay.ie
TAILORED PVC BOOT LINER MAT TRAY for MG ZS EV since 2019
The bulb was easy to swap out, if you get a really small flat screw driver and put it in the side nearer the driver, it leavers out towards you as you are standing at the boot. Just disconnect the cable, swap the bulb and reverse the process. If you've done it right the bulb will light up straight away