LONDON, Sha'ban 10, 1436, May 28, 2015, SPA -- Britain needs the European Union to agree to amend its founding treaties as part of its renegotiation drive, British Foreign Secretary Philip Hammond said on Thursday, saying London had to get a substantive deal to persuade voters to stay in the bloc, Reuters reported. "If our partners do not agree with us, do not work with us to deliver that package then we rule nothing out," Hammond told BBC radio. "The advice we're getting is that we will need Treaty change," he said. --SPA 12:27 LOCAL TIME 09:27 GMT www.spa.gov.sa/w