Thanks for all the suggestions guys, I'm sure there will be one there that will do nicely.
The reason that I asked about a light that is not only BRIGHT but visible in daylight is just today, well yesterday now (Thursday), I saw a cyclist come within a few feet of being knocked over by a driver who was appoaching from behind the cyclist but was not paying attension, the cyclist was fortunate that he was rite by a ramp in the kerb such that he could take quick action to get out of the way of the car..........now as I also mentioned I have the tiny tot on the bike (everyday) and it's always during the day so best to be seen, I will aslo be fitting a bar end mirror aswell just to be sure.
Thanks again
Bryan