(S (S (PP (IN As) (NP (NP (BASENP (DT the) (NN head)) (PP (IN of) (BASENP (NN road) (NN policing)))) (PP (IN within) (NP (BASENP (DT the) (NNP Association)) (PP (IN of) (BASENP (NNP Chief) (NNP Police) (NNPS Officers))))))) (COMMA ,) (S (BASENP (NNP Hughes)) (VP (MD can) (VP (VB be) (VP (VBN considered) (NP (BASENP (DT the) (JJ top) (NN traffic) (NN cop)) (PP (IN in) (BASENP (DT the) (NNP UK))))))))) (PERIOD .))