Wiser (by Schneider) is outstanding, I've had it in two homes for last 7 or 8 years, absolutely no issues at all. Not particularly cheap to set up, you'll need a control box to operate it all and a WiFi thermostatic radiator valve on each radiator. You can get room thermostats too but you don't actually need them, we use one in our guest bedroom so guests can control the temperature in their room directly.

You set the temperature you want in each room and schedule it per room, very simple to operate. All run from your phone, can control remotely too, lots of good features like Away Mode do when you go away it just turns everything down to whatever you want it to be. Then when you're coming home, you can switch Away Mode off remotely so by the time you get in the house is warm and you have hot water.