In view of the recent sectarian clashes in Northern Ireland and in parts of ngland,political commentators believe that Britain is losing the battle against extremists and sectarian mafia by relaxing its counter terror policies. Home Secretary, Theresa May is more disturbed by the re-emergence of extremism and sectarianism in Britain. Prime Minister David Cameron once said his country cannot tolerate Islamic extremism, but notwithstanding his harsh stand against these elements, the Prime Minister eat with them on the same table. Experts view this apologetically adapted policy of the Cameron government as a bigger weakness.The main cause of violent sectarian movements together is fear. Religious extremists are united by fear whether they are Christian, Muslim, or Jew. Terrorist and extremist groups in the UK will adapt a new technique and have also been quick to use new technologies. They are improving their abilities, way of operations and attacks. In future, Britain will face more violence, more terror attacks and more sectarian clashes in Northern Ireland.