HMRC are directly targeting online traders on sites like Amazon and Ebay to make sure that they are declaring taxable income from sales on-line and making sure they pay the correct amount of tax.
The campaign is generally aimed at professional sellers, and not the individual selling some personal belongings on the odd occasion. HMRC brought in a temporary amnesty so that traders could come forward and declare their taxable earnings.
It is reported that more than 500 million pounds has been received due to the amnesty.