Two days after the Australian Federal Election and with the results in doubt, the proposed company tax cuts are now at risk.  The UK's response to enormous economic uncertainty post-Brexit may be to slash its company tax rate to almost tax-haven levels, coupled with an increased focus on trading with China. There are lessons and warnings for Australia here. The UK is an important trading partner, but also a competitor for investment. Headline tax rates really matter to global companies looking to invest in the Asia-Pacific region - Australia's 30% company tax rate is increasingly unsustainable.