title: UK believes tax laws compatible with EU rules: PM May's spokeswoman
text: LONDON (Reuters) - Britain does not believe its tax laws are incompatible with European Union rules, a spokeswoman for Prime Minister Theresa May said on Thursday after the EU opened an investigation into a British tax scheme.  We do not believe these rules are incompatible with EU law, but we will cooperate with the European Commission s investigation,  the spokeswoman told reporters. 