I just decided to have a go at it today as having worked in window tinting/vinyl wrapping before - how hard could it be?
Turns out it's very easy. Here's the steps I took in case anyone else ever wants to remove TCR decals from their car. Unlikely but you never know.
1. Get a heatgun for £11.99 from Screwfix -
https://www.screwfix.com/p/energer-enb467htg-2000w-electric-heat-gun-240v/597402. Get some tar and glue remover. I used this one from Detailed Online -
https://detailedonline.co.uk/collections/decontamination/products/tar-glue-remover3. Wash the area with the stickers on with APC and rinse thoroughly, then dry
4. Carefully apply heat to a sticker with the heatgun. Literally about 10 seconds at a time from relatively far away
5. Gently try to get the corner of the sticker and peel it off. It should come off easily. If not, add a bit more heat and try again. None of the ones on my car were difficult to remove at all.
6. Throw this lot in the bin.
7. Spray the tar/glue remover all over the areas where the stickers were. Leave to soak for a bit then remove the residue with a microfibre. No pics of this.
8. Wash the car (not essential but nice to do after removing them) and enjoy the side of the car with no stickers on it