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It matters not that the so-called Meadow's law was taken from previous research ("'Incensed' Southall attacks press slurs", April 9).

As an expert witness in the Sally Clark case, Sir Roy Meadow was responsible for his testimony - and his introduction of "wholly erroneous" evidence amply justifies the criticism he has attracted.

Those involved in child protection have a duty to provide the courts with reliable testimony. In this, Sir Roy clearly failed. He may not have been original, but he is responsible.

Clive Baldwin
Senior lecturer
Bradford University