Find Ancestors

Im trying to trace any of my family,particularly my parents.My dads name was leonard cooper,whose 1st marriage was 2 a lady called mary.they had 2 children jennifer and michael.do not know my dads date of birth.they divorced and he met my mum jacqueline marie whose surnames included scarborough and nicholass.She had 3 children, karen, velma and adrian from a previous marriage whom i am also trying to find.Im quite sure my fathers dad was called george and lived in london. i was the only child from leonard and jacqueline.My mum went to new zealand when i was four and my dad remarried a lady called doreen.They lived at 118 sterling road, sittingbourne.kent.My dad was a wharfinger and worked at lymehouse wharf in rochester.Kent.I think my mum changed her name again to claiden when she went to new zealand and im quite sure my brother adrian went out there when he was an adult.I have no idea as to any of their dates of birth,places of births etc and would be most grateful to hear from anyone who may know of any information. Many many thanx.