Central heating [uk] thermostatic valves
It sounds like the system is out of balance.

Every radiator usually has two valves, one at each end. One valve (the lockshield valve) is used to balance the system at installation time and is not adjustable without tools, the other is used to vary the output and can be turned by hand. 

See radiator valves explained



You should be able to reduce the rate at which the room warms up by adjusting the lockshield valve slightly.

I'd try a quarter turn clockwise each morning until the system seems to be behaving as you want.