door bell camera

Hi I’m looking to upgrade a v old door entry phone in my house to a video one. It is a single dwelling set-up. From searching online, I don’t find too many brands but the ones I have all start around £250-350...

So I need to plug my Smart Door bell into it's power socket. To do this I need to either run the power cable thru the wall or thru the PVC Door frame. See photos here: https://www.amazon.co.uk/photos/share/TcGlSHK2ckljdmsWthoBfynjZx5zQn4BQUvKFNkU2qq There is already a light switch box, I was...