Where to get after market parts installed for XC40 Recharge?

[Cheezotron]

Hi all,
I recently got a 2021 XC40 Recharge Twin. It's ex-demo from the Dealer, so I didn't get a chance to choose the trim, and it is the Core level.

While I love the car to drive, I really want to add Parking Cameras, Front Parking Sensors, and to a lesser extent heated seats after-market.

When I bought the car the dealer implied it was possible to add these, but after the sale they have not been forthcoming about recommending a company that can install these parts for me - or explaining if it affects my warranty at all.

I made vague queries with one other company, I think it was called Car Communications or something, and they said they don't use genuine Volvo parts - which I was really hoping to get.

So my question to you is: Does anyone have a recommendation for a company (I'm based in Warwickshire) that can install these after market parts?

Thanks
-Ian