So, yeah, it's been the evening... which means tea making around Britain! So, I've had a look back at the frequency data for this evening...

A dip in frequency at 8.30pm and 9pm is clearly visible - as are smaller dips on the quarter hours. So, unless it's luck, at least my device isn't just showing noise :) I'm strangely excited by this - I love it when theory and what we're told is true :)
Using slightly different search terms... I've found this... http://www.nationalgrid.com/uk/Electricity/Data/Realtime/Frequency/Freq60.htm time to compare results :D
Posted by: Ed on August 24, 2008 10:30 PM