Never had one before. Would like a front and rear one and one that doesn't entail any wiring lol. I am also on a budget of £100 ish. Any help would be greatly appreciated. Many Thanks
Every camera needs wiring. Batteries last only a short time (maybe an hour in GoPros, for example, need constant recharging, and aren’t good in heat, so you normally need a power cable as well as a second front/rear cable.
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That is only one channel, so front only, which will avoid having to run a cable to the rear. You will still need a power cable though.
With no decent sales on at the moment in the UK, your budget is not enough for a really good front+rear, I would go for a decent front only, maybe add a second camera later.
A front camera will record the result of you being hit in the rear, and will show that you were not doing anything stupid when you were hit. By default a hit in the rear is not your fault anyway, so showing that you weren't doing anything stupid at the time of the loud bang and jolt forward is enough. A hit in the front tends to be your fault by default, or 50/50, so it is the front camera that is important, assuming that you want it for insurance purposes.
You could go for this, which comes with a free memory card for the same price:
VIOFO VS1 Mini Dash Cam, 1440P Hidden Design Dashcam, Free 32GB MicroSD Card, 5GHz Wi-Fi Voice Control Front Car Dash Camera with GPS, HDR, Night Vision 2.0, 24H Parking Mode, Support 512GB Max