I use a climote www.climote.ie I can control the heat remotly from my iPhone.
Also if you are putting in motorised valves on all circuits, make sure you also install an automatic bypass valve.
Also wire the valves to ensure full boiler interlock, i.e. the boiler cannot fire unless all system components require it to: time clock allows power to room stat which gives power to turn motorised valve which closes the grey permanent live of valve to the orange aux to allow boiler to fire.
Would you be capable of advising what can provide smarter heating usage in small terraced house, perhaps install above mentioned components?