The impending breakup of the UK (even if it doesn't happen this time round) affords us a unique opportunity to scrap British citizenship and replace it with a new, ethnic English citizenship. Foreign groups already domiciled here over more than one generation could stay on good behaviour. But each group would be responsible for the conduct of its members. If one group (e.g. Muslims) proved itself to be responsible for a high proportion of terrorist acts, paedophile rape gangs, beatings, violence etc. then it could be fined as a group (copying the Muslim Jizya system of corporate reponsibility) and ultimately expelled.