I'm guessing these lights were not bought in the UK?
If they originate from the US or Japan then Black is live and will wire to your red wire in the wall.
White is neutral and will wire to your black wire in the wall.
The bear wire in the wall is earth and should be sleeved with green and yellow sleeving. This should either be connected to the earth connection on the light fitting or be tucked away safely.
Please remember that this is guess work only therefore I cannot guarantee any results from the above advice. Please be safe.
Also bear in mind that a US fitting will have been made to run on 110volts not the UK 230v.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!