You will find that you have a contactor switching supply between the meters..
I have been looking into tariffs,, i am already on e10 with EDF.. and have found that i can save £236 by go to a 24/7 rate with gb energy supply . that is with a 70% off peak useage .
thats using the comparison site ..
Also e10 is being phased out ,so there only a few companies still do this,,/
I am an electrician , have spoken to suppliers ,, and try and recoomend to clients the best deals..and am not totally certain of the benefits of e10..
00:00 – 05:00 off peak
05:00 – 13:00 peak
13:00 – 16:00 off peak
16:00 – 20:00 peak
20:00 – 22:00 off peak
22:00 – 00:00 peak
I hope this of help.