Didn't they also say there was no question of us leaving the Single Market and the Customs Union?Absolutely 100% correct this is so obvious you wouldn't think it needs saying but it does. I remember watching debates before the referendum, and the leave spokespersons all saying we are bound to get a good deal from the EU because they have a trade surplus with us. They kept saying they sell us more than we sell them, so it is in their interests to give us a good deal.
I remember thinking though as you have just posted that a reduction in some of this trade say 15 or 20% is not going to make much of a difference to any of the 27, but will have a massive impact on us. I don't recall anyone on the Remain side making this point, or if they did they didn't seem to make it very well.
All I can remember is the Leave side saying the Germans will still want to sell us their cars and the French sell us their wine etc. so we are sure to get a good deal. I certainly don't remember any prominent Leave campaigner saying there was a good chance we could end up with no deal. In fact David Davies said we will end up with a deal with exactly the same benefits as we had while we are a member, and Liam Fox said the trade deal will be the easiest deal to negotiate in history. What a couple of jokers those two are.
And of course look at the trade deals the EU has signed since then. Japan could easily end up being a better export market for them than we are!