The 'no deal' tariffs set to zero lines covering 87% of imports by value. Some portion of that (I don't have the by value numbers but 26% of tariff lines) was already 0%.
However, many of the imports on current non-zero lines already come in on 0% due to several reasons.
Those reasons being ...
1. Imports from the EU
2. From FTA partners at 0%
3. From developing countries at 0%
4. Under a tariff-rate quota at 0%
5 On a 0% tariff rating anyway - not relevant as we're talking about non-zero tariff lines.
Total Imports in 2018 were £488,744m.
Total customs duties in 2018 were £3,326m
So average tariff of 0.68% on total trade
In 2018 Non-EU imports were £223,081m.
So average tariff of 1.49%. on non-EU trade.
ons.gov.uk/economy/nation…
assets.publishing.service.gov.uk/government/upl…
With most existing trade partners, significant savings are illusory.
Hope rests on finding cheaper (despite pound falling) alternate sources in quantity, previously tariffed out of the market, to replace current EU and trade partner sources.
But where are these in reality?