Trying to remember the actual words on the buttons on the radiators and having trouble but here's what I think: There should be two knobs, one for Input and one for Output - 'input' should be around 6 (higher in very cold weather) and put 'output' down to about 1 each evening, then when you come in from work or whenever you spend most time in the house turn the 'output' up to the max to allow for more heat to come out. Remember to turn it down again though so as to conserve energy when you're sleeping or not there. That's for the storage heaters.
For the other ones just put on a timer to come on half an hour before you get up or something - those are expensive (not that storage heaters aren't).