Hi Mark. Always look for your site when renewing. Thanks for making things easier to understand. I am now getting different answers re off peak times. I know what they are however , having just asked the question..do they alter when clocks go back .? I was told the times we are operating on now ( winter ) are the correct times for off peak and they actually move forward an hour in summer . I am on 12 am to 5 am , 1 pm to 4pm and 8 pm to 10 pm. So they are saying these off peak times move forward an hour in Summer time. Do you know if this is correct .?