There are also other local planning laws to consider. Where I live (Ireland East coast) the local recent by-laws allow one satellite dish only and should not be on the front of the house. I actually have two (one motorised, one fixed) but they are on the back of the house and I've had them for 15 years or more. Neighbours haven't complained either... I've also got ADSB antenna and vertical VHF/UHF antenna, but technically I'm outside the law
You do need line of sight with a dish, so you can't mount it in an attic/loft. You could hide it behind a roof line so it couldn't be seen from the front of the house. You mentioned a chimney mount - I'd suggest that this would not be suitable for a 90/100cm dish, especially with a motorised setup, due to wind load. I see a lot of SKY installs in my area where they are attached to chimneys, but I don't think it's a good idea.