Thanks Mike, I realised I probably could make it shorter but dont understand how. I am googling what he said, to try and understand, as yet with no luck. But I am willing to learn.
The input should be telling the random number generater to generate a number and in turn make its relative LED turn on and then stay on until the timer turns off and comes back on again at which point another random number is to be generated.
Hope that makes more sense mate.
Thanks for your time and patience all.