Internet and mobile phone games which are free to download are being investigated by the Office of Fair Trading.
It follows concerns that children could be tricked into spending money on upgrades, Daybreak's Jonathan Swain reports.
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The PHE will review the evidence and also make recommendations on how to address the issue, according to health officials.
The Commons Public Accounts Committee (PAC) said at least £9 million has been squandered on a project that failed to deliver.
A top temperature of 11 Celsius (52 F).