Other analysts are known to have published reports praising companies to the skies, and then tell fund managers who ring up for more information to call back on a private mobile number - so the analysts can tell the fund manager (on a phone line that is not being tape recorded) to ignore the report and avoid the stock like plague.

BBC: Analysts - the scourge of the City?

During busy periods the call handler will agree a time for an adviser to ring back, within a three-hour timeframe.

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