NEW : Police respond to trouble by small groups of masked protesters . Large numbers join union-backed marches in London , Glasgow and Belfast . The Metropolitan Police declined to provide an estimate of the number taking part in the march and rally . People `` want a Britain that works for them , '' says Labour Party leader Ed Miliband . Score: 6
NEW : Police respond to trouble by small groups of masked protesters . Large numbers join union-backed marches in London , Glasgow and Belfast . People `` want a Britain that works for them , '' says Labour Party leader Ed Miliband . Score: 6