125Watt, it will probably take some more per hour something like 150 watt.
makes 150watt *10 hours = 1500 watt a day= 1,5KWatt a day = 1,5 * 25p = 37,5 p a day
makes 0,375Pounds * 365days = 136,88 Pounds a year
or 11,41 Pounds a month (salaries go per month )
Pim