I don't think that there are official news about this one as there are
contradicting statements about HMRC when it comes to taxes in cryptocurrency. Just for example HMRC said in the article I provided that cryptocurrency gains are subject to capital gains tax. So I think there is no formal and final announcement as of the moment. And the "other income" taxing method you are referring to is too much of a tax burden for the citizen trading there cryptocurrency, and I doubt they will agree to something unethical like that.