Implement Capital punishment for Murder, Rape and paedophilia

We British citizens have had enough of despicable criminals being allowed to take our tax money, when they have ruined multiple lives. we want to make sure these people will never be allowed to walk British streets again, and ensure that proper justice is delivered for victims and their families, why should they live in prison for the rest of their lives, funded by British taxpayers, for the rest of their lives? its cheaper and more morally acceptable to execute them instead.