Bam said the magistrate who imposed the original bail restrictions last month had not included the prohibition on Pistorius returning to his home or a requirement that he report to a police station twice a week in the written court order he signed.

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More than 6, 000 mentally unstable people have persistently visited royal palaces or written to the Royal Family over the past six years, according to a police report.

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The report, written last year by a senior officer at West Yorkshire Police, says that Ch Insp Riordan behaved as if he was "hell bent on cornering his quarry", that his attention had become "focused unhealthily" on Mr Watson and that this had the effect of "clouding his judgement".

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