Bassuk said AFAIK (as far as I know) only Aids and Hepititis C will keep you out. Warts is nither of these so you in his opinion you would not be kept out for this decease.
But if you are applying for the visa somebody in that process has to have the answers. The United States has an 800 number and I would assume there is a help number at the consulate for UK in your country. I would call and ask them. Then you will have an answer you can trust.