//The latest massive changes will come in January to deal with the end of freedom of movement.//
Because, of course, they've only had four and a half years to prepare for that. Nowhere near long enough.
The government (and not necessarily just this one) will continue to stumble from one crisis to another whilst it is run by a group of people who have had very little experience of anything outside politics. Couple this with the quality of the people appointed to run major projects, agencies and departments (e.g. "Lady" Dido Harding) and you can easily see why failure is almost a given. Baroness Harding is currently engaged in an exercise to apportion blame elsewhere for her catastrophic failure whilst in charge of the country's "Test and Trace" system. She needs to do this before sailing off to take charge of the embryo agency which has been set up to replace the failed "Public Health England" (I have it on good authority that only the names have been changed to protect the guilty).
So long as the country operates on this "chumocracy" basis, where the same few dozen untalented people simply bumble around from job to job (with the appropriate "severance" payments in between and increased salaries upon arrival, natch) then the country as a whole will similarly stumble.