Nice with London one to see a house in that bracket that isn't furnished like a soulless hotel and looks like someone might live it in and have chosen their furniture, art and decoration. Super pricey houses tend to look so cold and impersonal - like someone just threw a bunch of money at a very unimaginative interior designer to fill it full of shiny things and generic 'art'
That Welsh place is stunning.
This is my sort of London dream home and area: https://www.rightmove.co.uk/properties/157227614#/?channel=RES_BUY