Light Timer - 250w HPS

Ok so I need a timer to switch my light on and off for flower, i have been to b and q and bought a 15quid digital timer thats utter bollox max load of 3120w my arse wont even switch the dam lamp on or off. So all i am asking is there anywhere i could buy one of the internet from? Whjat would be the cheapest option, not bothered about anything fancy just want a reliable timer for my light.
250w HPS SON-T bulb. Any advice much appreciated

http://www.norfolklights.com/lightsafe-13-amp-contactor-relay-unit-2-socket-p-1227.html.
get yourself one of these too, otherwise you might have a fire.

Arr i see so the digital timer i thought i wasted my money on might not have been such a waste thewn? if i hook one of these contacters up to my timer will it work? Cause recommended load for the timer is 3120w so a thought it should easily handle a 250w hps...

you need a double socket to use one of those. both plugs on the contactor are clearly labelled. one plugs into the mains, the other is plugged into the timer in the other socket, then your lights plug into the sockets at the socket end of the contactor. might pay also to invest in a smoke alarm. if there is a fire, at least you'll be the first to know instead of the fire brigade or the 'enemy'.