One thing I'd like to tackle in passing is the apparent belief that Brexit will produce a more outward looking view - Brexit is largely an inwardly nationalistic movement and it's likely why so much foreign money was poured into advertising campaigns targeting some key voters and trying to persuade them that Brexit was a good idea and a no deal Brexit was perfectly acceptable - simply put, Brexit would likely weaken the UK' s position on the world stage
We'll have to wait and see what this all brings.
Brexit will result in Britain having a more outward view, trade circumstance will demand it.
For too long she has been totally embroiled in EU politics, regulatory and economic matters, this has been the pragmatic approach caused by EU membership.
Since Britain abandoned the Commonwealth to side with the EU Commonwealth countries have readjusted. Yes the adjustment was very painful for a number of years but it opened doors to the rest of the world and I have no doubt that Aus and NZ for instance, ultimately were better off for the split just as the UK will be on leaving Europe.
This doesn’t mean there won’t be new and existing trade opportunities with the EU just that a UK Trade Dept must negotiate new terms free of the regulatory constraints of the past.
Britain has asked for help from the Australian Department of Trade (DFAT - Foreign Affairs and Trade) to provide help with negotiating FTAs with non EU others. DFAT has successfully negotiated FTAs with Japan, ROK, China, the Trans Pacific Partnership and others and currently completing deals with India and Indonesia so it has a wealth of recent experience.
As Britain’s own experience matures Trade deals with numerous non euro partners will flourish and her political partnership with such countries will grow because of it. Just as the Commonwealth thrived and survived once we were discarded, so will the UK.
Non of this presumes that Britain has totally ignored others because of the EU, simply that a change of emphasis will result from the realpolitik.