i have a leak from the bottom of the radiator or could be a hose as i can't see because off all the plastic covers please advise needed i don't have to take off the bumper do i

Leaks at the bottom corners of rad are common on early Mini's. The replacement rads are improved but you may need a new later revised rad hose to match on some models so compare old and new carefully.

This link may help you for gaining access:
http://www.northamericanmotoring.com/forums/how-to/191951-interior-exterior-girls-guide-to-removing-bumper-carrier-and-front-end-mfe.html

thanks matey ..also for the link