Who would be brave enough to fix our tax system

I read an article by Peter Wilby in Public Finance magazine a couple of days ago (see here) . What I really liked about the article is that it summarises in a few hundred words that the UK tax system is not ideal, the main things wrong with it, and why there is no realistic prospect of it being fixed. Perhaps it takes a cynical view about politicians but I would rather regard it as a realistic view. We have to recognise that all political decisions involved gainers and losers and politicians will inevitably take them into account. They might all see how a totally different system would be better for citizens and the economy but who would use their (relatively) brief period in power to achieve it?