<sod >The Governmentâs ban onÂ legal highsÂ has ânot made a blind bit of differenceâ and addiction to spice has increased by 25 per cent since it was introduced, the head of a nationwide addiction helpline has revealed.< eod>< sod > The Governmentâs ban on legal highs has ânot made a blind bit of differenceâ and calls about spice to a nationwide addiction helpline have increased by 25 per cent since the law was changed.< eod>