Last year you were looking for alternatives to TaxCalc after Intuit abandoned it. As the Inland Revenue is now HMRC, I now cannot find its list of acceptable software. Jonathan Haw
TaxCalc was taken over by Assured Solution Providers Limited, which already provided the TaxChecker program, and is still going strong at http://www.taxcalc.com/. All credit to the tax people, the Inland Revenue address I gave two years ago is being redirected and still works. The correct address for a list of UK tax filing software and forms is http://www.hmrc.gov.uk/efiling/sa_efiling/soft_dev.htm.