Well here we are - the day of infamy/destiny has happened, and now we buckle in and see what happens next.
In practical terms, the UK now has one year of regulatory alignment in which nothing changes and everyone probably gets lulled into a false sense of security, and the government has to panic over a new trade deal (and replacing all the UK's other EU-linked trade deals). And then... we'll see. The noises from the UK government are currently heavily against regulatory alignment of any kind, but the less we have of it, the less trade we get. After the December election the parliamentary stuff at our end will be easy, but it's now all on PM Johnson to try and deliver on his promises - or more accurately on what his voters feel like they were promised, which may not be the same thing at all. There's still a lot that's unclear about the UK's world role outside the EU - integration has been been central to Britain's post-war strategy since the 1960s and it's not clear where we sit without it, especially as our relationships with the Commonwealth and the US were predicated economically on the UK being a gateway to the EU market, which it won't be any more.
Meanwhile the opposition: two leadership elections (first Labour, then the Lib Dems) are coming up. Labour's is first, between former public prosecutor and Brexit spokesman Keir Starmer, Corbynite left-loyalist Rebecca Long-Bailey, longstanding shadow cabinet member Emily Thornberry, and northern, slightly more Eurosceptic backbencher Lisa Nandy. Starmer is basically running as "elect a sensible, slightly less left wing man who looks and sounds like people expect a Prime Minister to", Nandy is running on a fairly strong "reconnect with lost small-town voters but also be modestly socially liberal" platform, and RLB is running on "Corbyn was great and we should keep doing that". Honestly no idea what the Thornberry pitch is. My expectation is that Starmer will win - Labour are clearly now desperate for a winning candidate. The LD race I can do in more detail but I'll leave to a later post.
Finally worth noting: a poll recently put Yes ahead on a "should Scotland be independent" question and the SNP are heavilly lobbying for a new referendum, Northern Ireland has major upcoming problems with a customs border set to run down the Irish Sea, and Spain has reiterated that the status of Gibraltar will be on the table in the upcoming trade negotiations. Outside England, there are some serious problems brewing for the Johnson government, and how those will be solved, if at all, is still something of a mystery.