I have lived in my flat with economy 7 meter for a few years. The problem with daylight savings is that although we change time, our meters don’t. Meaning you have to change you habits to either a hour ahead or back to put the washing on for a cheap rate. The meter always remains on its time. A easy way of testing exactly – turn on your storage heaters before the time you think they should come on ( mines is 10;30pm in winter and 11;30pm in Summer) and note exactly what time the light on the switch by the heater comes on- then you have your exact time you are on cheap electric and use all you machines then. I hoover then, shower before 8;30am when it switches off. I put a post it note in a predominate place to remind me now what the time is instead of sitting my the heater switch.