The no deal scenario requires using the WTO trade and D Trump being president to sign the tremendous US?UK trade deal.
The president of the WTO last week stated that current US trade deals has resulted in the WTO being maginlised and requiring to be renegotiated before being used by a major trading nation.
The president of the USA has just been impeached and could be removed from office, if approved by the US Senate.
The President of the US has to win the 2020 November mid term elections if the impeachment is not activated by the Senate, according to US stations anyone with an impeachment against him will find it difficult to succeed.
PM Johnson will at the end of negotiations with the EU in December 2020 with no extension, will not have a juicy US trade deal but also possible no WTO rules to use.
The UK currency could collapse and we could end up trading with ourselves.