[quote Unsure33]@CrappleUmble
So if the rules had been adhered to then track and trace would not be needed. So removing politics why do you think there are hotspots in certain parts of the country.[/quote]
No, this is totally wrong. There are lots of jobs where SD isn't possible and lots of things we were allowed, often even encouraged to do (eg go into work in person even if not required) that still presented a transmission risk. Once the virus was in, simply adhering to legislation wasn't going to be enough because it simply isn't possible for everyone to stay away from each other. That approach, if it were ever going to work in the UK (I'm not saying it would've) needed doing earlier. 23rd March was too late.
Why hotspots: firstly, you can't remove politics. Any analysis that tries will be worthless. PHE think the virus may be endemic in some areas of the north for the following reasons: poorer housing, less likely to be able to work remotely, more multigenerational households. Then you have to consider where the people who are least likely to have funds to isolate are, given that we don't fully top up wages (that's also political).
Outside the north, I think the reason the south west has had such low rates is sparser population, fewer urban areas and now, not many students. London suffered worse first because the virus arrived via international travel.