ONLINE traders with undisclosed or under-declared profits must ‘own up’ by the middle of this month or face potentially swingeing penalties from the HM Revenue & Customs, tax advisers have warned.Heather Taylor, of Grant Thornton’s tax investigations team in Birmingham, said: “We’ve already seen HMRC’s various trade specific disclosure campaigns, including those targeted at plumbers, private tutors and doctors and dentists, which HMRC announced have yielded nearly £25m so far in additio......for the full story register now for free or login below...