That’s right, it goes in the square hole.
What the FUCK is wrong with FUCKING GiffGaff, man??? They are an extremely good option for a cheap mobile network with no contract bullshit!!
Walk away NOW. If the issues are known ahead of purchase insurance won’t cover them. You do NOT want to have to declare subsidence on your insurance quotes - most brokers just won’t cover you. Almost everything you said is a huge red flag and there are probably more “nice surprises” to come. If you have a mortgage approved already then go and find another property.
If this is your dream house, at least get a building & contents insurance quote before you go any further. You don’t want any further surprises.
Edit: source: bought a money-pit house, thought we had subsidence, we didn’t but it was a huge hassle and a lot of stress regardless. We got a bonus moth infestation out of it, though!
If it’s your car, then you are responsible for the safety of your passengers. You should ensure that any adults are aware of how to use the safety features, e.g. seatbelts, and you have a plan for evacuation of any children in the event of an emergency. Just like if you’re driving a car with child safety locks on the rear doors that prevent those doors from being opened from the inside.
Hate on Tesla or Musk all you want, but let’s not spread easily-disprovable FUD. It weakens whatever argument you’re trying to make.