The government later allowed them to resume broadcast but only after they agreed to a mandatory code of conduct.

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The mandatory code is aimed at balancing the right of parents to a fair hearing against the right of schools to not admit so many pupils that children's education suffers.

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The review, which will be published, is intended to identify how Barclays' business practices and culture needs to change, and to produce a new, mandatory code of conduct for the bank's staff.

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